PYTHON-5852 Fix inverted polling condition in TestSearchIndexProse test_case_3 (#2843)

Author: blink1073

test/asynchronous/test_index_management.py

@@ -223,7 +223,7 @@ async def test_case_3(self):
         t0 = time.time()
         while True:
             indices = await (await coll0.list_search_indexes()).to_list()
-            if indices:
+            if not indices:
                 break
             if (time.time() - t0) / 60 > 5:
                 raise TimeoutError("Timed out waiting for index deletion")

test/test_index_management.py

@@ -223,7 +223,7 @@ def test_case_3(self):
         t0 = time.time()
         while True:
             indices = (coll0.list_search_indexes()).to_list()
-            if indices:
+            if not indices:
                 break
             if (time.time() - t0) / 60 > 5:
                 raise TimeoutError("Timed out waiting for index deletion")