Merge "ClatCoordinator: close tun fd if detect mtu failed" am: 0750626dd0 am: c457e23c54 am: cf505ed93f

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/2109964

Change-Id: I2d7a66fcc5402d294e8ca61107e11eac55fef524
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>