[UCE] Fix NPE in the RcsContactUceCapability

When get the RcsContactPresenceTuple from the RcsContactUceCapability, it should check whether the servier ID is null or not

Bug: 191836903
Test: atest RcsContactUceCapabilityTest
Change-Id: I987c6f1fbcabfe64688f1d71210c83b6c4d8d9e0
1 file changed