Auto merge of #127096 - matthiaskrgr:rollup-kh7e0rh, r=matthiaskrgr

Rollup of 11 pull requests

Successful merges:

 - #123714 (Add test for fn pointer duplication.)
 - #124091 (Update AST validation module docs)
 - #127015 (Switch back `non_local_definitions` lint to allow-by-default)
 - #127016 (docs: check if the disambiguator matches its suffix)
 - #127029 (Fix Markdown tables in platform-support.md)
 - #127032 (Enable const casting for `f16` and `f128`)
 - #127055 (Mark Hasher::finish as #[must_use])
 - #127068 (Stall computing instance for drop shim until it has no unsubstituted const params)
 - #127070 (add () to the marker_impls macro for ConstParamTy)
 - #127071 (Remove (deprecated & unstable) {to,from}_bits pointer methods)
 - #127078 (Enable full tools and profiler for LoongArch Linux targets)

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