[BUG FIX] - Fixing bug that prevents postgresql_flexible_server_virtu…

[leonrob]

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Description

I originally logged this bug here: #27796

But haven't received a response. So I figured I'd just fix it and see if you guys can work with what I send.

the Read function does not handle the scenario where the source server and replica server roles switch during a failover. This causes Terraform to interpret the resource as missing or changed, leading to an attempt to recreate it.

In the Read function:
The state.SourceServerId and state.ReplicaServerId are determined based on the response from the Azure API.
If a failover occurs, the source server and replica server may swap roles, but the Read function does not account for this role reversal.
Terraform detects this as a drift from the expected state and plans to recreate the resource.

PR Checklist

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Changes to existing Resource / Data Source

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Change Log

Below please provide what should go into the changelog (if anything) conforming to the Changelog Format documented here.

• azurerm_resource - support for the thing1 property [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 #0000

Note

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

[leonrob]

Attempting to fix bug #27796

if anyone sees this please let me know if this needs anything further