Rename Red Knot (#17820)

crates/ty_python_semantic/resources/mdtest/shadowing/variable_declaration.md

@@ -0,0 +1,13 @@
+# Shadwing declaration
+
+## Shadow after incompatible declarations is OK
+
+```py
+def _(flag: bool):
+    if flag:
+        x: str
+    else:
+        x: int
+
+    x: bytes = b"foo"
+```