Merge #8059

8059: Move doc-comment highlight injection from AST to HIR r=matklad,jonas-schievink a=Veykril

Fixes #5016

Co-authored-by: Lukas Wirth <lukastw97@gmail.com>

crates/hir/src/semantics.rs

@@ -752,6 +752,7 @@ macro_rules! to_def_impls {
 
 to_def_impls![
     (crate::Module, ast::Module, module_to_def),
+    (crate::Module, ast::SourceFile, source_file_to_def),
     (crate::Struct, ast::Struct, struct_to_def),
     (crate::Enum, ast::Enum, enum_to_def),
     (crate::Union, ast::Union, union_to_def),