The "Timers" filter is not applied on job list when opened via URL / bookmark

[nikulinma-vrn]

Bug Description

Documented behavior: "Filter values are stored in the URL query parameters, so a filtered list can be bookmarked or shared as a link."

Steps To Reproduce

• Open <control-url>/jobs?timers=true directly in the browser (simulating a bookmark/shared link).
• Inspect the list and the "Timers" checkbox.

Current Behavior

• The "Timers" checkbox is checked (state restored from the URL), BUT the list is not filtered: all jobs are shown (timer jobs interleaved with failing ones). Grid size = 50 (a page of all 99); a timer job appears only deep in the list.
• The filter only takes effect after toggling the checkbox manually: uncheck "Timers" → check "Timers" → the list becomes exactly 6 timer jobs (grid size = 6).

Expected Behavior

Opening ?timers=true (or ?executable=true) should immediately filter the data per the URL, so a bookmarked/shared filtered list works.