[WEB-2573] improvement: search-issues API optimization. (#5727)

* limit search results to 100 issues.

apiserver/plane/app/views/search/base.py

@@ -90,7 +90,7 @@ class GlobalSearchEndpoint(BaseAPIView):
             "project__identifier",
             "project_id",
             "workspace__slug",
-        )
+        )[:100]
 
     def filter_cycles(self, query, slug, project_id, workspace_search):
         fields = ["name"]

apiserver/plane/app/views/search/issue.py

@@ -97,6 +97,6 @@ class IssueSearchEndpoint(BaseAPIView):
                 "state__name",
                 "state__group",
                 "state__color",
-            ),
+            )[:100],
             status=status.HTTP_200_OK,
         )