[release-2.5] Fix duplicate webhook patch and add missing ScheduledSparkApplication Patches (#2875)

The kustomization.yaml had a duplicate entry for webhook_in_sparkapplications.yaml
which appears to be a copy-paste error from the controller-runtime refactor.

This commit:
- Fixes the duplicate webhook patch entry in config/crd/kustomization.yaml
- Adds webhook_in_scheduledsparkapplications.yaml for conversion webhook support
- Adds cainjection_in_scheduledsparkapplications.yaml for cert-manager CA injection

Both CRDs (SparkApplication and ScheduledSparkApplication) now have corresponding
webhook and CA injection patch files, matching the intended kustomize configuration.

Signed-off-by: roburishabh <roburishabh@outlook.com>
Co-authored-by: roburishabh <roburishabh@outlook.com>

Author: google-oss-robot

config/crd/kustomization.yaml

@@ -10,7 +10,7 @@ patches:
 # [WEBHOOK] To enable webhook, uncomment all the sections with [WEBHOOK] prefix.
 # patches here are for enabling the conversion webhook for each CRD
 - path: patches/webhook_in_sparkapplications.yaml
-- path: patches/webhook_in_sparkapplications.yaml
+- path: patches/webhook_in_scheduledsparkapplications.yaml
 # +kubebuilder:scaffold:crdkustomizewebhookpatch
 
 # [CERTMANAGER] To enable cert-manager, uncomment all the sections with [CERTMANAGER] prefix.

config/crd/patches/cainjection_in_scheduledsparkapplications.yaml

@@ -0,0 +1,7 @@
+# The following patch adds a directive for certmanager to inject CA into the CRD
+apiVersion: apiextensions.k8s.io/v1
+kind: CustomResourceDefinition
+metadata:
+  annotations:
+    cert-manager.io/inject-ca-from: CERTIFICATE_NAMESPACE/CERTIFICATE_NAME
+  name: scheduledsparkapplications.sparkoperator.k8s.io

config/crd/patches/webhook_in_scheduledsparkapplications.yaml

@@ -0,0 +1,16 @@
+# The following patch enables a conversion webhook for the CRD
+apiVersion: apiextensions.k8s.io/v1
+kind: CustomResourceDefinition
+metadata:
+  name: scheduledsparkapplications.sparkoperator.k8s.io
+spec:
+  conversion:
+    strategy: Webhook
+    webhook:
+      clientConfig:
+        service:
+          namespace: system
+          name: webhook-service
+          path: /convert
+      conversionReviewVersions:
+      - v1