fix: Remove discovery fallback in external storage #7600

Job	Run time
gate	8s
Playwright setup	6m 43s
Playwright tests for installer	11m 41s
Playwright tests 1 / 8	7m 37s
Playwright tests 7 / 8	18m 43s
Playwright tests 5 / 8	17m 9s
Playwright tests 3 / 8	8m 49s
Playwright tests 6 / 8	14m 9s
Playwright tests 2 / 8	12m 27s
Playwright tests 8 / 8	13m 15s
Playwright tests 4 / 8	6m 29s
merge-reports	1m 12s
playwright-test-summary	8s
	1h 58m 30s

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