Permissions: Properly annotate MODIFY_PHONE_STATE

The annotation @RequiresPermissions warn when a permission is not
properly enforce.
Fix all annotation to match the API behavior and make sure that the
permission are enforced as soon as the call reach the bluetooth process.
This allow to remove permission enforcement for internal Bluetooth call

Bug: 349682934
Test: m Bluetooth when errorprone is in failure mode
Flag: Exempt mechanical
Change-Id: Ifb929a9f922cfa4b777dc5353698c89fcbc32e9d