WIP: Housekeeping: Update Prism to V8

[dpvreony]

What kind of change does this PR introduce?
Package update

What is the current behavior?
Blocks people wanting to use V8 with Splat

What is the new behavior?
Updates the Splat Prism integration for the new interfaces. Still not supporting scoped objects

What might this PR break?
anyone downstream dependent on v7 but in terms of splat not much, interface was extended not broken

Please check if the PR fulfills these requirements

• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)

Other information:

[codecov]

Codecov Report

Merging #669 (9775277) into main (107548c) will decrease coverage by 0.01%.
The diff coverage is 40.00%.

@@            Coverage Diff             @@
##             main     #669      +/-   ##
==========================================
- Coverage   71.84%   71.83%   -0.02%     
==========================================
  Files          99       99              
  Lines        4717     4732      +15     
==========================================
+ Hits         3389     3399      +10     
- Misses       1328     1333       +5     

Impacted Files	Coverage Δ
src/Splat.Prism/SplatContainerExtension.cs	55.22% <40.00%> (+3.30%)	⬆️

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[worldbeater]

LGTM, but probably worth throwing NotSupportedException instead of NIE if we aren't supporting scopes?

[dpvreony]

ok will make adjustment

[github-actions]

This pull request has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.