Rollup of 9 pull requests

[matthiaskrgr]

Successful merges:

• regression test for #103626 #121281 (regression test for encountered a fresh type during canonicalization #103626)
• Fix validation on substituted callee bodies in MIR inliner #122168 (Fix validation on substituted callee bodies in MIR inliner)
• Handle str literals written with ' lexed as lifetime #122217 (Handle str literals written with ' lexed as lifetime)
• transmute: caution against int2ptr transmutation #122379 (transmute: caution against int2ptr transmutation)
• rustdoc --test: Prevent reaching the maximum size of command-line by using files for arguments if there are too many #122840 (rustdoc --test: Prevent reaching the maximum size of command-line by using files for arguments if there are too many)
• Uniquify ReError on input mode in canonicalizer #122907 (Uniquify ReError on input mode in canonicalizer)
• Add test in higher ranked subtype #122942 (Add test in higher ranked subtype)
• add a couple more ice tests #122943 (add a couple more ice tests)
• core/panicking: fix outdated comment #122963 (core/panicking: fix outdated comment)

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