fix(RHIDP-9113): enable nested groups sync for Keycloak v26

Add `query: ""` to keycloakOrg provider config to fetch all groups
including nested subgroups.

Signed-off-by: skestwal <skestwal@redhat.com>

Author: shashankkestwal

ci-scripts/rhdh-setup/template/backstage/app-config.yaml

@@ -21,11 +21,12 @@ catalog:
         clientSecret: ${CLIENT_SECRET}
         userQuerySize: 1000
         groupQuerySize: 1000
+        query: ""
         schedule:
           frequency: 
             hours: 2
           timeout: 
-            minutes: 1
+            minutes: 10
           initialDelay: 
             minutes: 1
 techdocs:

ci-scripts/rhdh-setup/template/keycloak/keycloak-op.yaml

@@ -11,7 +11,7 @@ kind: Subscription
 metadata:
   name: rhbk-operator
 spec:
-  channel: stable-v26.4
+  channel: stable-v26.0
   name: rhbk-operator
   source: redhat-operators
   sourceNamespace: openshift-marketplace