Rollup of 10 pull requests

[Centril]

Successful merges:

• Only show methods that appear in impl blocks in the Implementors sections of trait doc pages #61505 (Only show methods that appear in impl blocks in the Implementors sections of trait doc pages)
• move stray run-pass const tests into const/ folder #61701 (move stray run-pass const tests into const/ folder)
• Tweak transparent enums and unions diagnostic spans #61748 (Tweak transparent enums and unions diagnostic spans)
• Make MaybeUninit #[repr(transparent)] #61802 (Make MaybeUninit #[repr(transparent)])
• ci: Add a script for generating CPU usage graphs #61839 (ci: Add a script for generating CPU usage graphs)
• Remove unnecessary lift calls #61842 (Remove unnecessary lift calls)
• Turn down the myriad-closures test #61843 (Turn down the myriad-closures test)
• rustc_typeck: correctly compute Substs for Res::SelfCtor. #61896 (rustc_typeck: correctly compute Substs for Res::SelfCtor.)
• syntax: Factor out common fields from SyntaxExtension variants #61898 (syntax: Factor out common fields from SyntaxExtension variants)
• create an issue for miri even in status test-fail #61938 (create an issue for miri even in status test-fail)

Failed merges:

r? @ghost