fix size of configurable buffer for enums

[xunilrj]

Description

This PR fixes an issue where the encoded bytes for enums were not big enough for the biggest variant.

Checklist

• I have linked to any relevant issues.
• I have commented my code, particularly in hard-to-understand areas.
• I have updated the documentation where relevant (API docs, the reference, and the Sway book).
  • If my change requires substantial documentation changes, I have requested support from the DevRel team
• I have added tests that prove my fix is effective or that my feature works.
• I have added (or requested a maintainer to add) the necessary Breaking* or New Feature labels where relevant.
• I have done my best to ensure that my PR adheres to the Fuel Labs Code Review Standards.
• I have requested a review from the relevant team or maintainers.

[github-actions]

Benchmark for d3b9777

Click to view benchmark

Test	Base	PR	%
code_action	5.2±0.04ms	5.2±0.22ms	0.00%
code_lens	297.9±8.19ns	296.6±8.13ns	-0.44%
compile	2.7±0.05s	2.7±0.07s	0.00%
completion	4.8±0.12ms	4.8±0.33ms	0.00%
did_change_with_caching	2.7±0.06s	2.7±0.03s	0.00%
document_symbol	869.1±25.34µs	913.3±43.29µs	+5.09%
format	72.1±1.04ms	73.1±0.78ms	+1.39%
goto_definition	337.3±10.16µs	342.9±10.22µs	+1.66%
highlight	9.1±0.14ms	8.8±0.24ms	-3.30%
hover	494.6±7.04µs	501.2±10.52µs	+1.33%
idents_at_position	120.2±0.56µs	120.0±0.51µs	-0.17%
inlay_hints	638.3±25.43µs	629.6±27.24µs	-1.36%
on_enter	2.1±0.07µs	2.1±0.06µs	0.00%
parent_decl_at_position	3.8±0.09ms	3.6±0.06ms	-5.26%
prepare_rename	343.1±10.36µs	346.3±12.74µs	+0.93%
rename	9.5±0.20ms	9.3±0.33ms	-2.11%
semantic_tokens	1240.2±19.65µs	1271.6±70.59µs	+2.53%
token_at_position	347.6±2.81µs	342.1±4.33µs	-1.58%
tokens_at_position	3.8±0.08ms	3.6±0.06ms	-5.26%
tokens_for_file	410.2±3.97µs	407.5±5.95µs	-0.66%
traverse	38.2±0.77ms	38.9±0.98ms	+1.83%

[github-actions]

Benchmark for 2f9b1ee

Click to view benchmark

Test	Base	PR	%
code_action	5.1±0.13ms	5.2±0.08ms	+1.96%
code_lens	343.4±10.45ns	331.7±11.80ns	-3.41%
compile	2.6±0.04s	2.7±0.06s	+3.85%
completion	4.5±0.01ms	4.7±0.02ms	+4.44%
did_change_with_caching	2.6±0.04s	2.6±0.02s	0.00%
document_symbol	868.9±12.49µs	866.3±29.18µs	-0.30%
format	72.5±2.18ms	72.6±2.64ms	+0.14%
goto_definition	327.1±5.72µs	345.9±4.10µs	+5.75%
highlight	8.6±0.01ms	8.9±0.02ms	+3.49%
hover	492.1±11.63µs	499.3±7.67µs	+1.46%
idents_at_position	119.8±0.39µs	120.0±1.77µs	+0.17%
inlay_hints	614.7±27.37µs	646.1±41.97µs	+5.11%
on_enter	2.1±0.04µs	2.0±0.06µs	-4.76%
parent_decl_at_position	3.6±0.11ms	3.7±0.10ms	+2.78%
prepare_rename	329.1±4.05µs	343.7±10.27µs	+4.44%
rename	8.9±0.15ms	9.3±0.11ms	+4.49%
semantic_tokens	1251.4±16.56µs	1229.5±56.83µs	-1.75%
token_at_position	333.4±2.14µs	337.6±2.56µs	+1.26%
tokens_at_position	3.6±0.25ms	3.7±0.02ms	+2.78%
tokens_for_file	403.4±20.10µs	404.8±2.39µs	+0.35%
traverse	37.1±0.82ms	38.2±0.49ms	+2.96%

[IGI-111]

Can we add a test for this?

[xunilrj]

Can we add a test for this?

Done.

[github-actions]

Benchmark for 161d055

Click to view benchmark

Test	Base	PR	%
code_action	5.2±0.13ms	5.1±0.32ms	-1.92%
code_lens	286.7±8.00ns	288.1±7.34ns	+0.49%
compile	2.6±0.05s	2.7±0.08s	+3.85%
completion	4.7±0.02ms	4.5±0.01ms	-4.26%
did_change_with_caching	2.6±0.03s	2.6±0.02s	0.00%
document_symbol	926.7±36.69µs	924.2±30.04µs	-0.27%
format	72.4±0.94ms	73.3±1.29ms	+1.24%
goto_definition	341.0±6.47µs	344.9±7.10µs	+1.14%
highlight	8.9±0.13ms	8.7±0.02ms	-2.25%
hover	499.0±5.12µs	495.8±9.06µs	-0.64%
idents_at_position	117.3±0.52µs	118.5±0.52µs	+1.02%
inlay_hints	638.3±15.67µs	636.2±25.20µs	-0.33%
on_enter	2.0±0.03µs	2.1±0.23µs	+5.00%
parent_decl_at_position	3.7±0.04ms	3.6±0.04ms	-2.70%
prepare_rename	339.6±6.07µs	342.3±4.59µs	+0.80%
rename	9.3±0.05ms	8.9±0.20ms	-4.30%
semantic_tokens	1243.9±16.91µs	1269.0±15.32µs	+2.02%
token_at_position	337.7±1.96µs	342.0±1.61µs	+1.27%
tokens_at_position	3.7±0.03ms	3.6±0.01ms	-2.70%
tokens_for_file	400.7±3.36µs	405.1±5.89µs	+1.10%
traverse	37.9±1.47ms	37.0±0.89ms	-2.37%

[github-actions]

Benchmark for 7941ec7

Click to view benchmark

Test	Base	PR	%
code_action	5.2±0.07ms	5.0±0.02ms	-3.85%
code_lens	283.8±5.26ns	285.9±14.94ns	+0.74%
compile	2.7±0.03s	2.7±0.05s	0.00%
completion	4.7±0.10ms	4.6±0.15ms	-2.13%
did_change_with_caching	2.7±0.04s	2.6±0.03s	-3.70%
document_symbol	858.5±23.07µs	876.8±51.08µs	+2.13%
format	72.9±1.18ms	73.0±1.21ms	+0.14%
goto_definition	339.9±8.34µs	347.4±6.29µs	+2.21%
highlight	9.0±0.12ms	8.7±0.26ms	-3.33%
hover	493.5±6.67µs	500.5±6.92µs	+1.42%
idents_at_position	118.8±0.49µs	118.9±0.64µs	+0.08%
inlay_hints	631.0±22.93µs	627.3±17.96µs	-0.59%
on_enter	2.1±0.06µs	2.0±0.04µs	-4.76%
parent_decl_at_position	3.7±0.03ms	3.6±0.06ms	-2.70%
prepare_rename	342.6±7.78µs	347.8±6.69µs	+1.52%
rename	9.2±0.03ms	9.0±0.16ms	-2.17%
semantic_tokens	1197.1±10.60µs	1243.3±16.31µs	+3.86%
token_at_position	335.9±10.41µs	336.2±2.13µs	+0.09%
tokens_at_position	3.7±0.02ms	3.6±0.05ms	-2.70%
tokens_for_file	397.1±3.80µs	399.8±2.68µs	+0.68%
traverse	37.4±1.12ms	37.7±1.03ms	+0.80%

[github-actions]

Benchmark for c4d448f

Click to view benchmark

Test	Base	PR	%
code_action	5.0±0.18ms	4.7±0.10ms	-6.00%
code_lens	274.9±10.21ns	274.8±9.69ns	-0.04%
compile	2.5±0.04s	2.4±0.05s	-4.00%
completion	4.4±0.12ms	4.2±0.03ms	-4.55%
did_change_with_caching	2.5±0.03s	2.4±0.03s	-4.00%
document_symbol	875.4±32.60µs	798.0±8.40µs	-8.84%
format	70.7±1.55ms	69.3±2.38ms	-1.98%
goto_definition	327.0±8.51µs	327.2±8.98µs	+0.06%
highlight	8.6±0.26ms	8.1±0.06ms	-5.81%
hover	474.1±11.28µs	497.1±11.41µs	+4.85%
idents_at_position	112.1±2.27µs	110.1±1.14µs	-1.78%
inlay_hints	610.2±21.46µs	692.2±15.81µs	+13.44%
on_enter	1950.9±50.41ns	2.0±0.07µs	+2.52%
parent_decl_at_position	3.5±0.06ms	3.4±0.17ms	-2.86%
prepare_rename	326.3±7.82µs	326.5±5.56µs	+0.06%
rename	8.8±0.17ms	8.4±0.13ms	-4.55%
semantic_tokens	1177.4±30.26µs	1164.7±29.13µs	-1.08%
token_at_position	319.2±7.38µs	325.2±3.12µs	+1.88%
tokens_at_position	3.6±0.10ms	3.3±0.05ms	-8.33%
tokens_for_file	389.0±9.48µs	376.2±5.31µs	-3.29%
traverse	35.4±0.91ms	34.9±0.66ms	-1.41%