Catch UnsupportedOperationException on calling mdns

MDNS native support from Netd is stopped in V.

Bug: 298594687
Bug: 312092770
Test: run CtsNetTestCasesMaxTargetSdk30 on V, no fatal exception.
Change-Id: I3774288cdf5b82e6aeeee7ee2d030fdc524e1aa8
1 file changed