Fix race condition in TestJobRunWaitAbandonedLinksTheRun

[janniklasrose]

Changes

Don't rely on timing - slower machines like CI runners don't guarantee completion

Why

Observed it during 2 different PR's CI runs, e.g. https://github.com/databricks/cli/actions/runs/33664383046/job/100362562756?pr=6454

=== FAIL: bundle/direct/dresources TestJobRunWaitAbandonedLinksTheRun (0.01s)
    job_run_test.go:244: 
        	Error Trace:	/Users/runner/work/cli/cli/bundle/direct/dresources/job_run_test.go:244
        	Error:      	Error "interrupted while waiting for the run to finish: context deadline exceeded" does not contain "run page: https://myworkspace.databricks.test/jobs/456/runs/123?o=900800700600"
        	Test:       	TestJobRunWaitAbandonedLinksTheRun

=== FAIL: bundle/direct/dresources TestJobRunWaitAbandonedLinksTheRun (re-run 1) (0.01s)
    job_run_test.go:244: 
        	Error Trace:	/Users/runner/work/cli/cli/bundle/direct/dresources/job_run_test.go:244
        	Error:      	Error "interrupted while waiting for the run to finish: context deadline exceeded" does not contain "run page: https://myworkspace.databricks.test/jobs/456/runs/123?o=900800700600"
        	Test:       	TestJobRunWaitAbandonedLinksTheRun

=== FAIL: bundle/direct/dresources TestJobRunWaitAbandonedLinksTheRun (re-run 2) (0.00s)
    job_run_test.go:244: 
        	Error Trace:	/Users/runner/work/cli/cli/bundle/direct/dresources/job_run_test.go:244
        	Error:      	Error "interrupted while waiting for the run to finish: context deadline exceeded" does not contain "run page: https://myworkspace.databricks.test/jobs/456/runs/123?o=900800700600"
        	Test:       	TestJobRunWaitAbandonedLinksTheRun

Tests

Ran repeatedly in local, all passed (before failure rate was ~8%)

[denik]

nice, thanks!