add empty hidden input so that empty checkboxes get submitted (#35552) #1899

Job	Run time
Check conditional workflows and jobs	6s
Build	6m 7s
AuroraDB IT	0s
Java Distribution IT (ubuntu-latest, temurin, 17)	13m 57s
Base IT (1)	18m 18s
Java Distribution IT (windows-latest, temurin, 17)	21m 52s
Quarkus IT (ubuntu-latest, zip, true)	1h 0m 27s
Adapter IT	6m 18s
Base IT (2)	25m 31s
Base IT (3)	14m 15s
Base IT (4)	25m 21s
Quarkus IT (ubuntu-latest, container, true)	25m 52s
Quarkus UT (ubuntu-latest)	1m 45s
Base UT	1m 32s
Quarkus UT (windows-latest)	3m 30s
Quarkus IT (ubuntu-latest, storage, true)	10m 55s
Quarkus IT (windows-latest, win)	25m 24s
Base IT (5)	27m 55s
Base IT (6)	27m 50s
Clustering IT	12m 58s
External Infinispan IT (clusterless,multi-site)	6m 59s
FIPS IT (non-strict)	30m 14s
FIPS IT (strict)	31m 13s
FIPS UT	1m 46s
Forms IT (chrome)	31m 16s
Migration Tests (24.0.4, postgres)	3m 18s
Forms IT (firefox)	30m 24s
Migration Tests (24.0.4, mysql)	3m 5s
SSSD	7m 0s
Store IT (postgres)	22m 21s
Migration Tests (24.0.4, oracle)	17m 2s
Store IT (mysql)	25m 58s
Migration Tests (24.0.4, mssql)	2m 59s
Store Model Tests	31m 26s
Keycloak Test Framework	36s
Store IT (oracle)	35m 57s
Migration Tests (24.0.4, mariadb)	2m 51s
Store IT (mssql)	25m 18s
Volatile Sessions IT	6m 48s
Store IT (mariadb)	22m 40s
WebAuthn IT (chrome)	22m 19s
WebAuthn IT (firefox)	4m 30s
Status Check - Keycloak CI	6s
	11h 35m 59s

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