helm.kubebuilder.io/v2-alpha produces invalid YAML

### What broke? What's expected? Is #5718 back in 4.15.0 ? It seems so.... ### Reproducing this issue From my config/manager/manager.yaml kustomize: ```yaml .... volumeMounts: - name: manager-config mountPath: "/etc/config" readOnly: true envFrom: - secretRef: name: manager-secrets volumes: - name: manager-config configMap: name: manager-config ``` I build and lint the chart with: ```bash kubebuilder edit --plugins=helm.kubebuilder.io/v2-alpha --force --output-dir=helm helm lint helm/chart --values etc/app-values.yml ``` The `helm lint` fails with: ``` helm lint helm/chart --values etc/app-values.yml --debug level=DEBUG msg="number of dependencies in the chart" chart=ci-accounts-operator dependencies=0 ==> Linting helm/chart [INFO] Chart.yaml: icon is recommended [ERROR] templates/manager/manager.yaml: unable to parse YAML: error converting YAML to JSON: yaml: line 83: did not find expected key ``` The chart YAML produced is: ```yaml volumeMounts: {{- if .Values.manager.extraVolumeMounts }} {{- toYaml .Values.manager.extraVolumeMounts | nindent 10 }} {{- end }} - mountPath: /etc/config name: manager-config readOnly: true ... volumes: {{- if .Values.manager.extraVolumes }} {{- toYaml .Values.manager.extraVolumes | nindent 8 }} {{- end }} - configMap: name: {{ include "ci-accounts-operator.resourceName" (dict "suffix" "manager-config" "context" $) }} name: manager-config ``` If I remove the non-template values from that chart (i.e., -mountPath and -configMap) `helm lint` passes. Further, `helm template` produces; ```yaml volumeMounts: - mountPath: /etc/config name: manager-config readOnly: true securityContext: runAsNonRoot: true seccompProfile: type: RuntimeDefault terminationGracePeriodSeconds: 10 volumes: - configMap: name: ciao-manager-config name: manager-config ``` ### KubeBuilder (CLI) Version 4.15.0 ### PROJECT version "3" ### Plugin versions ```yaml - go.kubebuilder.io/v4 plugins: autoupdate.kubebuilder.io/v1-alpha: {} helm.kubebuilder.io/v2-alpha: manifests: dist/install.yaml output: helm ``` ### Other versions go version go1.26.4 linux/amd64 sigs.k8s.io/controller-runtime v0.24.1 kubectl version Client Version: v1.29.10 Kustomize Version: v5.0.4-0.20230601165947-6ce0bf390ce3 ### Extra Labels _No response_