[stable-2.6] Validate types before asserting lengths (#56882)

(cherry picked from commit 9c5b721)

Co-authored-by: Matt Martz <matt@sivel.net>

test/sanity/validate-modules/schema.py

@@ -25,13 +25,13 @@ def sequence_of_sequences(min=None, max=None):
     return All(
         Any(
             None,
-            [Length(min=min, max=max)],
-            tuple([Length(min=min, max=max)]),
+            [Any(list, tuple)],
+            tuple([Any(list, tuple)]),
         ),
         Any(
             None,
-            [Any(list, tuple)],
-            tuple([Any(list, tuple)]),
+            [Length(min=min, max=max)],
+            tuple([Length(min=min, max=max)]),
         ),
     )