firewall: session-dependent privacy flags #1445

Job	Run time
frontend tests on ubuntu-latest	2m 19s
backend build on ubuntu-latest	2m 39s
frontend tests on windows-latest	9m 34s
integration test	8m 5s
backend build on windows-latest	16m 5s
check commits	3m 0s
frontend tests on macOS-latest	5m 10s
backend build on macOS-latest	9m 41s
lint	2m 52s
RPC proto compilation check	3m 40s
unit tests	35s
unit-race	44s
	1h 4m 24s

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