Removing attribute should reset that attribute to default value

[mattdot]

Describe the bug

Removing attribute should reset that attribute to default value. This is a mass refactoring across all resources.

Sample Terraform Code

resource powerplatform_environment {
        Description = "Set to something"
}

update

resource powerplatform_environment {
}

should result in description being set to default value of ""

Expected behavior

A clear and concise description of what you expected to happen.

System Information

• Provider Version: [e.g. 0.2.2]
• OS & Version: [e.g. Windows, Linux, MacOS]

Additional context

Add any other context about the problem here.

Contribution

Do you plan to raise a PR to address this issue? YES / NO?