ci: set groups claim to empty string to show Groups tab (#4010)

Signed-off-by: Jesse Simpson <[email protected]>

Author: jessesimpson36

charts/camunda-platform-8.8/test/integration/scenarios/chart-full-setup/values-integration-test-ingress-oidc.yaml

@@ -138,6 +138,7 @@ orchestration:
       unprotectedApi: false
       oidc:
         usernameClaim: oid
+        groupsClaim: ""
     authorizations:
       enabled: true
     initialization: