[Preview]: Configure Azure Key Vaults with private endpoints: Incorrectly reports resources as non-compliant

#### Details of the scenario you tried and the problem that is occurring
The policy successfully detected and created a private endpoint for a Key Vault but keeps reporting the Key Vault as non-compliant.

> **Reason for non-compliance**
> No related resources match the effect details in the policy definition. (Error code: Not Found)
>
> Existence condition
>
> **Type**
> Microsoft.KeyVault/vaults/privateEndpointConnections

#### Verbose logs showing the problem
N/A

#### Suggested solution to the issue
N/A

#### If policy is Guest Configuration - details about target node
N/A