Replace hidden API usages of NetworkCapabilities

For callers who access hidden APIs of NetworkCapabliities,
replace them with Builder system APIs.

Test: atest FrameworksNetTests
Bug: 182963397
Merged-In: Iaa4e256e43a33bdf08780bdd1a1a8b538058634d
Change-Id: Iaa4e256e43a33bdf08780bdd1a1a8b538058634d
  (cherry-pick from ag/13929753)
1 file changed