ylproj/jupyterlab @ 8ced7c465c31d914580931ad989fd86f3b2198b5

Steven Silvester 8ced7c465c test cleanup		5 lat temu
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layoutrestorer.spec.ts	8ced7c465c test cleanup	5 lat temu
router.spec.ts	8d5d9f5667 clean up packages	5 lat temu
shell.spec.ts	8d5d9f5667 clean up packages	5 lat temu