fix: support accessing fixture at same index of dependency fixture #6596

Job	Run time
lint	2m 2s
test (ubuntu-latest, 18)	15m 9s
test (ubuntu-latest, 20)	19m 5s
test-browser (chrome, chromium)	5m 12s
test (macos-latest, 20)	16m 46s
test-browser-windows (chrome, chromium)	7m 32s
test-browser (firefox, firefox)	4m 42s
test (windows-latest, 20)	32m 6s
test-browser-windows (edge, webkit)	8m 7s
test-ui	2m 23s
test-browser (edge, webkit)	6m 30s
typecheck	4m 11s
	2h 3m 45s

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