Rollup merge of #137565 - compiler-errors:macro-ex, r=estebank

Try to point of macro expansion from resolver and method errors if it involves macro var

In the case that a macro caller passes an identifier into a macro generating a path or method expression, point out that identifier in the context of the *macro* so it's a bit more clear how the macro is involved in causing the error.

r? ``````````@estebank`````````` or reassign

compiler/rustc_hir_analysis/src/errors.rs

@@ -82,6 +82,8 @@ pub(crate) struct AssocItemNotFound<'a> {
     pub label: Option<AssocItemNotFoundLabel<'a>>,
     #[subdiagnostic]
     pub sugg: Option<AssocItemNotFoundSugg<'a>>,
+    #[label(hir_analysis_within_macro)]
+    pub within_macro_span: Option<Span>,
 }
 
 #[derive(Subdiagnostic)]