Generation time for Test Runs Summary gadget scales linearly with number of Test Executions due to sequential paginated Jira queries

When loading the Test Runs Summary gadget, the frontend performs a full paginated traversal of all matching Test Execution issues (100 per request), issuing sequential Jira search requests and aggregating results via Xray endpoints.

This results in load times that scale linearly with the number of matching Test Executions, leading to significant performance degradation for large datasets.