[pyupgrade] Fix false positive when class name is shadowed by local variable (UP008) (#20427)

## Summary

Fixes #20422

---------

Co-authored-by: Brent Westbrook <36778786+ntBre@users.noreply.github.com>

crates/ruff_linter/resources/test/fixtures/pyupgrade/UP008.py

@@ -271,3 +271,19 @@ class ChildI9(ParentI):
                 if False: super
                 if False: __class__
         builtins.super(ChildI9, self).f()
+
+
+# See: https://github.com/astral-sh/ruff/issues/20422
+# UP008 should not apply when the class variable is shadowed
+class A:
+    def f(self):
+        return 1
+
+class B(A):
+    def f(self):
+        return 2
+
+class C(B):
+    def f(self):
+        C = B  # Local variable C shadows the class name
+        return super(C, self).f()  # Should NOT trigger UP008

crates/ruff_linter/src/rules/pyupgrade/rules/super_call_with_parameters.rs

@@ -139,7 +139,11 @@ pub(crate) fn super_call_with_parameters(checker: &Checker, call: &ast::ExprCall
         return;
     };
 
-    if !((first_arg_id == "__class__" || first_arg_id == parent_name.as_str())
+    if !((first_arg_id == "__class__"
+        || (first_arg_id == parent_name.as_str()
+            // If the first argument matches the class name, check if it's a local variable
+            // that shadows the class name. If so, don't apply UP008.
+            && !checker.semantic().current_scope().has(first_arg_id)))
         && second_arg_id == parent_arg.name().as_str())
     {
         return;