feat: [CHA-2354] Add ParsedPredefinedFilterResponse type (#1683)

## Summary
Add type definitions for the new `predefined_filter` field returned in
QueryChannels responses when a predefined filter is used.

## Changes
- Added `ParsedPredefinedFilterResponse` type containing:
  - `name`: The predefined filter name
  - `filter`: The interpolated filter object
  - `sort`: Optional interpolated sort array
- Updated `QueryChannelsAPIResponse` to include optional
`predefined_filter` field

## Related
- Backend PR: https://github.com/GetStream/chat/pull/11583

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-authored-by: Claude Opus 4.5 <[email protected]>

Author: totalimmersion

src/types.ts

@@ -353,6 +353,7 @@ export type QueryReactionsAPIResponse = APIResponse & {
 
 export type QueryChannelsAPIResponse = APIResponse & {
   channels: Omit<ChannelAPIResponse, keyof APIResponse>[];
+  predefined_filter?: ParsedPredefinedFilterResponse;
 };
 
 export type QueryChannelAPIResponse = APIResponse & ChannelAPIResponse;
@@ -4692,6 +4693,16 @@ export type ListPredefinedFiltersResponse = APIResponse & {
   prev?: string;
 };
 
+/**
+ * Contains the interpolated filter and sort from a predefined filter.
+ * This is returned in the QueryChannels response when using a predefined filter.
+ */
+export type ParsedPredefinedFilterResponse = {
+  name: string;
+  filter: Record<string, unknown>;
+  sort?: PredefinedFilterSortParam[];
+};
+
 export type PredefinedFilterSort = SortParam[];
 
 export type ListPredefinedFiltersOptions = Pager & {