Change the way querying is done in the Test Runs List report to allow date range filtering to work

Steps to reproduce:

1. Go to Testing Board > Reports > Test Runs List.
2. Select a project/filters that would return over 1,000 issues.
3. Enable date range filtering and select a range that would reduce the results to less than 1,000 (example: Time Frame > Past 24 hours).

Expected result:

Since the date range filter would reduce the amount of results to less than 1,000 (ex.: there are 3,000 Test Runs for the defined project/filter, but only 200 have been updated over the past 24 hours), the report should work, displaying the Test Runs that have been updated during the selected date range, as long as they don't exceed 1,000.

Actual result:

Since the report will query all the Test Executions returned by the project/filter first, and then apply a second query to filter by the date range, the report will return an error ("Too many Test executions are trying to load") if the project/filter returns more than 1,000 issues, disregarding the date range.