Block overriding satellite carrier config keys on user builds

Add a blocklist to CarrierConfigLoader.overrideConfig to prevent certain sensitive carrier config keys from being overridden on user builds.

The following keys are now blocklisted:

KEY_SATELLITE_ENTITLEMENT_SUPPORTED_BOOL
KEY_SATELLITE_DATA_SUPPORT_MODE_INT

Attempting to override these keys on a user build will result in a SecurityException. This restriction does not affect userdebug or eng builds, where overriding these values for testing purposes is still allowed.

Test: Added CarrierConfigLoaderTest#testOverrideConfig_blockedKeys to verify the new logic.
Flag: EXEMPT BUGFIX
Bug: 442272360
Cherrypick-From: https://googleplex-android-review.googlesource.com/q/commit:9127724a48d3cf4386c2ea1f4369f4042b484bbe
Cherrypick-From: https://googleplex-android-review.googlesource.com/q/commit:ebdb85bd47db13c7d4893814c194ee3dbb0176a9
Cherrypick-From: https://googleplex-android-review.googlesource.com/q/commit:14d4b99129806b97340fd1b6b3db103cef4d5152
Merged-In: I8bc6f72854ce664b70b852f49c4136cbba31d5e5
Change-Id: I8bc6f72854ce664b70b852f49c4136cbba31d5e5