fix: clear stale preflight issues on subsequent valid form submissions #26968

Job	Run time
pkg-pr-new	47s
test-kit-server-side-route-resolution (dev)	3m 53s
lint-all	5m 30s
test-kit-server-side-route-resolution (build)	4m 25s
test-kit-svelte-async (build)	3m 46s
test-kit-svelte-async (dev)	3m 32s
test-kit (18, ubuntu-latest, chromium)	12m 27s
test-kit (24, ubuntu-latest, chromium)	11m 18s
test-kit (22, ubuntu-latest, chromium)	11m 42s
test-kit (20, ubuntu-latest, chromium)	12m 32s
test-others (20)	2m 38s
test-others (18)	2m 32s
test-kit-cross-browser (18, windows-latest, chromium, dev)	3m 53s
test-kit-cross-browser (18, ubuntu-latest, firefox, build)	6m 8s
test-kit-cross-browser (18, macOS-latest, webkit, build)	6m 54s
test-kit-cross-browser (18, ubuntu-latest, firefox, dev)	2m 49s
test-kit-cross-browser (18, macOS-latest, webkit, dev)	3m 56s
test-others (22)	2m 22s
test-others (24)	2m 22s
test-kit-cross-browser (18, windows-latest, chromium, build)	4m 58s
	1h 48m 24s

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