Auto merge of #118679 - matthiaskrgr:rollup-zr1l9w6, r=matthiaskrgr

Rollup of 7 pull requests

Successful merges:

 - #116496 (Provide context when `?` can't be called because of `Result<_, E>`)
 - #117563 (docs: clarify explicitly freeing heap allocated memory)
 - #117874 (`riscv32` platform support)
 - #118516 (Add ADT variant infomation to StableMIR and finish implementing TyKind::internal())
 - #118650 (add comment about keeping flags in sync between bootstrap.py and bootstrap.rs)
 - #118664 (docs: remove #110800 from release notes)
 - #118669 (library: fix comment about const assert in win api)

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

compiler/rustc_span/src/symbol.rs

@@ -973,6 +973,7 @@ symbols! {
         managed_boxes,
         manually_drop,
         map,
+        map_err,
         marker,
         marker_trait_attr,
         masked,
@@ -1137,6 +1138,7 @@ symbols! {
         offset,
         offset_of,
         offset_of_enum,
+        ok_or_else,
         omit_gdb_pretty_printer_section,
         on,
         on_unimplemented,