Make sure that field usage preserves the original line info (#19751)

Currently `struct.field` will generate a node with `info` that points to the
symbol definition instead of having the actual node location.

compiler/semexprs.nim

@@ -1436,8 +1436,10 @@ proc builtinFieldAccess(c: PContext, n: PNode, flags: TExprFlags): PNode =
         # is the access to a public field or in the same module or in a friend?
         markUsed(c, n[1].info, f)
         onUse(n[1].info, f)
+        let info = n[1].info
         n[0] = makeDeref(n[0])
         n[1] = newSymNode(f) # we now have the correct field
+        n[1].info = info # preserve the original info
         n.typ = f.typ
         if check == nil:
           result = n