fix: Use Pod Disruption Template in all Template Files.

[aidanleuck]

Fixes an issue where the Loki helm chart will fail to install on older versions of Kubernetes still using the v1beta1 version of PodDisruptionBudget. Some files were hardcoded to use policy/v1 endpoint while others correctly used the template. This PR updates all files to use the correct template.

Which issue(s) this PR fixes: Fixes #13387

Checklist

• [x] Reviewed the CONTRIBUTING.md guide (required)
• [x] Documentation added - Not applicable
• [x] Tests updated - Not applicable
• [x] Title matches the required conventional commits format, see here
• [x] Changes that require user attention or interaction to upgrade are documented in docs/sources/setup/upgrade/_index.md - Not applicable
• [x] For Helm chart changes bump the Helm chart version in production/helm/loki/Chart.yaml and update production/helm/loki/CHANGELOG.md and production/helm/loki/README.md. Example PR
• [x] If the change is deprecating or removing a configuration option, update the deprecated-config.yaml and deleted-config.yaml files respectively in the tools/deprecated-config-checker directory. Example PR - Not applicable

[CLAassistant]

All committers have signed the CLA.