This change reverts the following:

400b2cc2 Don't rescue old top-level SharedFunctionInfos
Reviewed on https://chromium-review.googlesource.com/c/v8/v8/+/3657472

16a7150b Reland "Disable recompilation of existing Scripts from
           Isolate compilation cache"
Reviewed on https://chromium-review.googlesource.com/c/v8/v8/+/3655011

2df4d58a Fix rehashing of script compilation cache
Reviewed on https://chromium-review.googlesource.com/c/v8/v8/+/3654413

c8848cf4 Refactor CompilationSubCache
Reviewed on https://chromium-review.googlesource.com/c/v8/v8/+/3629603

25072178 Improve Script reuse in isolate compilation cache, part 1
Reviewed on https://chromium-review.googlesource.com/c/v8/v8/+/3597106

Bug: v8:12808, chromium:1325566, chromium:1325567, chromium:1325601, chromium:1328671, chromium:1328672, chromium:1328678, chromium:1328811, chromium:1328810
Change-Id: I1d318dc172e5214166d3b15f19903186f4fe6024
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3664023Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/main@{#80744}