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This reverts #56087. That PR was a fix for a bug present in all versions of TS, but caused 2 more bugs and a perf regression in 5.4. It may be the case that #57396 fixes all of these, but that PR introduces a lot more code and is still in discussion,
Fixes #57843
Fixes #57781
Fixes #57357
Reopens #49171
Not sure if I'm reading the baselines correctly, but since this is removing the perf baseline, I guess the new baselines would have caught this regression as before the revert, there are some 3.2k types, but after, it's under the 100 type threshold? And similarly for symbols.