Tethering: fix using wrong subId problem

There is the potential bug[1] that default data subId change
intent may lose. So tethering may cache the outdated default
data subId in TetheringConfiguration. Now EntitlementManager
would fetch configuration every time and this would re-exam
whether subId is changed.
Additional passing subId to Settings to avoid default data
subId change right away when launching entitlement check.
Thus, Settings can know whether this is outdated entitlement
check request.
[1] b/129224596

Bug: 129751453
Test: -build, flash, boot
      -atest FrameworksNetTests
      -manual test with carrier SIM

Change-Id: If334dd1cd383cced9db5cf0d0bc9dc60ed198816