Save mcast_resolicit flag value at initialization.

To prevent from reading the flag value and potential code switch in the
middle of connection, always save the flag value at initialization and
use that value until disconnection.

Bug: 248139741
Test: atest NetworkStackTests NetworkStackIntegrationTests
Change-Id: I7469b18be1d751557298ddaa918d18d4ee0692cc
2 files changed