Add validation checks for maxAllowedDataMode

On SatelliteConfig OTA, we need to validate if the incoming
SatelliteConfig has valid maxAllowedDataMode i.e. whether the
dataMode values are within the accepted range (0 to 2 =>
SATELLITE_DATA_SUPPORT_ONLY_RESTRICTED to SATELLITE_DATA_SUPPORT_ALL)
Only then, accept the incoming OTA

Bug: 417164189
Test: atest frameworks/opt/telephony/tests/telephonytests/src/com/android/internal/telephony/configupdate/TelephonyConfigUpdateInstallReceiverTest.java
Flag: EXEMPT bug fix
Change-Id: I305974719ada896d7a74d203884c3e38d6ec50e4