Clean up FLAG_VALIDATE_NETWORK_ON_IPSEC_LOSS

This CL also fixes incorrect code comments

Bug: 329139898
Test: atest FrameworksVcnTests && atest CtsVcnTestCases
Flag: EXEMPT flag cleanup
Change-Id: Ib61dfbf9c3e147766530dbc519a785b8b13fac9d
3 files changed