Clean up obsolete pre-2510 troubleshooting articles; add Azure Local support-window and ARB recovery TSG (#3868)
* Remove obsolete pre-2510 troubleshooting articles, add Azure Local support-window note and ARB deletion/recovery TSG
- Remove 3 troubleshooting articles whose fixes shipped well before Azure Local 2510 (kube-apiserver-log-overflow, cluster-upgrade-status, storage-provision-issue); update TOC, known-issues table, whats-new cross-reference, and redirects (including fixing legacy aks/aksarc redirects that would have chained through the removed pages)
- Add explicit six-month Azure Local version support-window note to aks-on-azure-local-support-policy.md, cross-referenced from aks-arc-known-issues.md, linking to the Azure Local release-information end-of-support section
- Add new customer-facing troubleshooting article describing the impact to AKS clusters when the Azure Arc resource bridge is deleted or recovered, with TOC entry and cross-links from aks-troubleshoot.md, aks-arc-known-issues.md, and connectivity-modes.md
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
* Rename ARB troubleshooting article to azure-arc-resource-bridge-deleted-recovered.md per review feedback
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
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Co-authored-by: Srikant Sarwa <srikantsarwa@Srikants-MacBook-Pro.local>
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>