Set DEXOPT_DISABLE_HIDDEN_API_CHECKS for system apps

For now, system apps will be exempt from hidden API access checks.
Pass the appropriate flag to dexopt.

Test: manual
Bug: 64382372
Bug: 72305689
Merged-In: I5676ffa3a5ba680bf5f6bab0b62f0acf4a933097
Change-Id: Idc3067d2c6040f15fe0f051090ba45efe591ebae
4 files changed