Cosmos: Broaden 410/1002 changelog wording to cover query + change-feed paths

Self-review noted PartitionKeyRangeGoneRetryPolicy is also used by the change-feed reader path (ChangeFeedFetcher), not only queries. Clarify the changelog scope accordingly.

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

Author: Copilot

sdk/cosmos/azure-cosmos/CHANGELOG.md

@@ -7,7 +7,7 @@
 #### Breaking Changes
 
 #### Bugs Fixed
-* Fixed transient `410/1002` (`PartitionKeyRangeGone`) errors surfacing to query callers during a partition split or merge. The query-path `PartitionKeyRangeGoneRetryPolicy` previously retried only once and ignored the in-progress `410/1007` (`CompletingSplitOrMerge`) and `410/1008` (`CompletingPartitionMigration`) sub-status codes; it now refreshes the routing map and retries those sub-statuses up to 10 times before surfacing the error.
+* Fixed transient `410/1002` (`PartitionKeyRangeGone`) errors surfacing to callers during a partition split or merge. The `PartitionKeyRangeGoneRetryPolicy` (used on the query and change-feed paths) previously retried only once and ignored the in-progress `410/1007` (`CompletingSplitOrMerge`) and `410/1008` (`CompletingPartitionMigration`) sub-status codes; it now refreshes the routing map and retries those sub-statuses up to 10 times before surfacing the error.
 
 #### Other Changes