Update JQL property test to reflect cross-project sync fix

The project filter was intentionally removed from searchIssuesByKeys() to
fix cross-project ticket sync. Update the property test to no longer assert
the presence of 'project =' in the generated JQL.

backend/__tests__/jira-jql-window-invariant.property.test.js

@@ -100,7 +100,8 @@ describe('Feature: jira-api-compliance-cleanup, Property 1: JQL window is always
 
         expect(capturedJql).not.toBeNull();
         expect(capturedJql).toContain('updated >= -72h');
-        expect(capturedJql).toContain('project =');
+        // project filter intentionally removed — issue keys are globally unique
+        // and the filter broke cross-project ticket sync
       }),
       { numRuns: 100 }
     );