[BR04] Skip traffic of networking-blocked uid in data stall detection

This is needed to solve false alarms when data stall detection
mechanism detected data stall but the traffic is actually blocked
by firewall solutions.

Test: atest NetworkStackTests:TcpSocketTrackerTest
Fix: 297836825
Change-Id: I576e0122e9f70f363e483831301dc176500fe01c
3 files changed