azurerm_postgresql_flexible_server_virtual_endpoint - is no longer removed from state when a fail-over occurs

[mbfrahry]

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Description

This PR fixes #27796 where the resource is removed from state when a fail-over occurs. Instead of removing from state, we'll check to see if the resource exists under the replica server id. If it does, we hide the fact that a fail-over occurred. We've had to update the id of the resource to account for that and we've had to prevent the ability of the replica_server_id from being changed if a fail-over occurred due to the myriad of edge cases we'd need to account for.

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• azurerm_postgresql_flexible_server_virtual_endpoint - is no longer removed from state when a fail-over occurs[GH-00000]

This is a (please select all that apply):

• Bug Fix
• New Feature (ie adding a service, resource, or data source)
• Enhancement
• Breaking Change

Related Issue(s)

Fixes #27796

Note

If this PR changes meaningfully during the course of review please update the title and description as required.

[mbfrahry]

[sreallymatt]

I've left 2 minor comments inline, other than that I think this looks good

[sreallymatt]

LGTM!

[github-actions]

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