Merge remote-tracking branch 'origin/wip/az/ghc-9.10-backports-1' into HEAD

compiler/GHC/Hs.hs

compiler/GHC/Hs/Binds.hs

compiler/GHC/Hs/Type.hs

compiler/GHC/Parser.y

compiler/GHC/Parser/PostProcess.hs

compiler/GHC/ThToHs.hs

testsuite/tests/ghc-api/exactprint/T22919.stderr

testsuite/tests/ghc-api/exactprint/Test20239.stderr

testsuite/tests/ghc-api/exactprint/ZeroWidthSemi.stderr

...e/tests/haddock/should_compile_flag_haddock/T17544.stderr

...ests/haddock/should_compile_flag_haddock/T17544_kw.stderr

...e/tests/haddock/should_compile_flag_haddock/T24221.stderr

testsuite/tests/linear/should_fail/LinearLet6.stderr

testsuite/tests/linear/should_fail/LinearLet7.stderr

testsuite/tests/module/mod185.stderr

testsuite/tests/parser/should_compile/DumpParsedAst.stderr

.../tests/parser/should_compile/DumpParsedAstComments.stderr

testsuite/tests/parser/should_compile/DumpSemis.stderr

testsuite/tests/parser/should_compile/KindSigs.stderr

testsuite/tests/parser/should_compile/T15323.stderr