fix(vm): make loop iteration limit consistent across loop kinds

[mansiverma897993]

This Pull Request fixes/closes #5461.

With set_loop_iteration_limit(10), a for loop body ran 12 times and a while loop body ran 11 times before the RuntimeLimit error was raised. Two bugs compounded:

• IncrementLoopIteration only raised the error when the counter was strictly greater than the limit, which allows one extra iteration for every loop kind.
• for loops jumped over their IncrementLoopIteration opcode on the first pass (the initial jump into the loop lands after it, since it must skip the per-iteration binding copy and the final expression), so the first iteration was never counted.

It changes the following:

• IncrementLoopIteration now raises the limit error when the counter reaches the limit instead of one past it.
• The bytecompiler emits IncrementLoopIteration after the condition/done check and right before the loop body for all loop kinds (for, while, do-while, for-in, for-of). This means the limit counts actual body executions: a limit of N allows exactly N body executions for every loop kind, and loops that finish within the limit (e.g. for (let i = 0; i < 10; ++i) with limit 10, or a for-of over a 10-element array) never raise a limit error.
• Adds a regression test asserting that all five loop kinds stop after exactly limit body executions and agree with each other, and regenerates the affected insta-bytecode snapshots.

[github-actions]

Test262 conformance changes

Test result	main count	PR count	difference
Total	53,125	53,125	0
Passed	51,073	51,073	0
Ignored	1,482	1,482	0
Failed	570	570	0
Panics	0	0	0
Conformance	96.14%	96.14%	0.00%

Tested main commit: 4fc75c6ae9d85f2b8065c6716f88e9b35318438c
Tested PR commit: a4dde97a3665062e6dee57357109c72f2fbc65e4
Compare commits: 4fc75c6...a4dde97

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 62.88%. Comparing base (6ddc2b4) to head (a4dde97).
⚠️ Report is 1012 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff             @@
##             main    #5464       +/-   ##
===========================================
+ Coverage   47.24%   62.88%   +15.63%     
===========================================
  Files         476      530       +54     
  Lines       46892    59102    +12210     
===========================================
+ Hits        22154    37166    +15012     
+ Misses      24738    21936     -2802     

☔ View full report in Codecov by Harness.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.