Harden UI test route bootstrap on CI #134

Job	Run time
Restore + Build Browser Suites	1m 7s
Restore + Build Supporting Suites	58s
Run Supporting Suites	1m 9s
Run Browser Suite (Editor)	17m 11s
Run Browser Suite (Shell)	5m 10s
Run Browser Suite (Studio)	3m 39s
Run Browser Suite (Reader)	9m 49s
Resolve Release Version	0s
Publish Release Build	0s
Publish GitHub Release	0s
Deploy GitHub Pages	0s
	39m 3s

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