v1.16: cost model could double count builtin instruction cost (backport of #32422)

[mergify]

This is an automatic backport of pull request #32422 done by Mergify.
Cherry-pick of c69bc00 has failed:

On branch mergify/bp/v1.16/pr-32422
Your branch is up to date with 'origin/v1.16'.

You are currently cherry-picking commit c69bc00f69.
  (fix conflicts and run "git cherry-pick --continue")
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Changes to be committed:
	modified:   program-runtime/src/compute_budget.rs

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   runtime/src/cost_model.rs

To fix up this pull request, you can check it out locally. See documentation: https://docs.github.com/en/github/collaborating-with-pull-requests/reviewing-changes-in-pull-requests/checking-out-pull-requests-locally

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[codecov]

Codecov Report

Merging #32516 (a02aa10) into v1.16 (29bcd55) will decrease coverage by 0.1%.
The diff coverage is 95.7%.

@@            Coverage Diff            @@
##            v1.16   #32516     +/-   ##
=========================================
- Coverage    81.9%    81.9%   -0.1%     
=========================================
  Files         762      762             
  Lines      207599   207644     +45     
=========================================
+ Hits       170110   170143     +33     
- Misses      37489    37501     +12     

[t-nelson]

does this not need a feature gate?

[tao-stones]

does this not need a feature gate?

it's only in leader code, doesn't impact consensus. Also the leader adjusts block CU with actually consumed CUs after executing transactions, so the impact of this bug is a very small chance transactions could be included in a block, but not.