[Pixel VPN] Apply reviewed default permissions Pregrantting below permissions: READ_PHONE_STATE Flag: EXEMPT add permission pregranted in b/337725984 Bug: 373686360 Test: presubmit, manual install (cherry picked from https://googleplex-android-review.googlesource.com/q/commit:796a10b44014235cc7632e56febc3fbb4bfdded7) Merged-In: I2f2cf9e1bd2e60dd04afac8fdf6d1c7f5f654778 Change-Id: I2f2cf9e1bd2e60dd04afac8fdf6d1c7f5f654778