web/flows: fix invisible captcha call #25854

Job	Run time
lint-golint	1m 23s
test-unittest	3m 1s
ci-outpost-mark	1s
build-container (proxy)	2m 44s
build-binary (proxy, linux, amd64)	1m 52s
build-container (ldap)	2m 47s
build-binary (proxy, linux, arm64)	2m 34s
build-container (radius)	2m 18s
build-binary (ldap, linux, amd64)	1m 57s
build-container (rac)	2m 30s
build-binary (ldap, linux, arm64)	1m 54s
build-binary (radius, linux, amd64)	1m 50s
build-binary (radius, linux, arm64)	2m 1s
build-binary (rac, linux, amd64)	2m 31s
build-binary (rac, linux, arm64)	1m 50s
	31m 13s

Provide feedback