Auto merge of #103431 - Dylan-DPC:rollup-oozfo89, r=Dylan-DPC

Rollup of 6 pull requests

Successful merges:

 - #101293 (Recover when unclosed char literal is parsed as a lifetime in some positions)
 - #101908 (Suggest let for assignment, and some code refactor)
 - #103192 (rustdoc: Eliminate uses of `EarlyDocLinkResolver::all_traits`)
 - #103226 (Check `needs_infer` before `needs_drop` during HIR generator analysis)
 - #103249 (resolve: Revert "Set effective visibilities for imports more precisely")
 - #103305 (Move some tests to more reasonable places)

Failed merges:

r? `@ghost`
`@rustbot` modify labels: rollup

compiler/rustc_errors/src/lib.rs

@@ -463,6 +463,9 @@ pub enum StashKey {
     UnderscoreForArrayLengths,
     EarlySyntaxWarning,
     CallIntoMethod,
+    /// When an invalid lifetime e.g. `'2` should be reinterpreted
+    /// as a char literal in the parser
+    LifetimeIsChar,
 }
 
 fn default_track_diagnostic(_: &Diagnostic) {}