[Search] Add 2026-04-01 GA test coverage and recordings (#46684)

* [Search] Add 2026-04-01 GA test coverage and recordings

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

* [Search] Strengthen test coverage and recordings

Add targeted unit coverage for SDK-owned Search behavior, including
buffered sender defaults, processing checks, context managers, field
helpers, and SearchClient metadata accessors.

Restore meaningful live coverage for knowledge resource ETags and
buffered sender upload replacement and delete behavior.

Refresh buffered sender recordings and update the asset tag.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

---------

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: hizixin

sdk/search/azure-search-documents/assets.json

@@ -2,5 +2,5 @@
   "AssetsRepo": "Azure/azure-sdk-assets",
   "AssetsRepoPrefixPath": "python",
   "TagPrefix": "python/search/azure-search-documents",
-  "Tag": "python/search/azure-search-documents_35a2c408d6"
+  "Tag": "python/search/azure-search-documents_575b3d2518"
 }

sdk/search/azure-search-documents/azure/search/documents/aio/_operations/_patch.py

@@ -200,7 +200,9 @@ async def _index_documents_actions(
                 result_first_half = batch_response_first_half
             else:
                 result_first_half = []
-            batch_response_second_half = await self._index_documents_actions(actions=batch.actions[pos:], **kwargs)
+            batch_response_second_half = await self._index_documents_actions(
+                batch=_models.IndexDocumentsBatch(actions=batch.actions[pos:]), **kwargs
+            )
             if batch_response_second_half:
                 result_second_half = batch_response_second_half
             else:

sdk/search/azure-search-documents/azure/search/documents/aio/_patch.py

@@ -221,7 +221,7 @@ async def _process(self, timeout: int = 86400, **kwargs) -> bool:
                     if result.succeeded:
                         await self._callback_succeed(action)
                     elif is_retryable_status_code(result.status_code):
-                        self._retry_action(action)
+                        await self._retry_action(action)
                         has_error = True
                     else:
                         await self._callback_fail(action)
@@ -231,7 +231,7 @@ async def _process(self, timeout: int = 86400, **kwargs) -> bool:
             return has_error
         except Exception:  # pylint: disable=broad-except
             for action in actions:
-                self._retry_action(action)
+                await self._retry_action(action)
                 if raise_error:
                     raise
                 return True
@@ -354,9 +354,9 @@ async def __aexit__(self, *args) -> None:
         await self.close()
         await self._client.__aexit__(*args)
 
-    def _retry_action(self, action: IndexAction) -> None:
+    async def _retry_action(self, action: IndexAction) -> None:
         if not self._index_key:
-            asyncio.create_task(self._callback_fail(action))
+            await self._callback_fail(action)
             return
         key = cast(str, action.get(self._index_key) if action else "")
         counter = self._retry_counter.get(key)
@@ -369,7 +369,7 @@ def _retry_action(self, action: IndexAction) -> None:
             self._retry_counter[key] = counter + 1
             self._index_documents_batch.enqueue_actions(action)
         else:
-            asyncio.create_task(self._callback_fail(action))
+            await self._callback_fail(action)
 
     async def _callback_succeed(self, action: IndexAction) -> None:
         if self._on_remove: