Fix more crashes during partial telephony stack boot - round 2

Bug: 331855229
Flag: EXEMPT bugfix
Test: atest CarWatchdogManagerTest
      on aosp_cf_x86_64_only_phone-trunk_staging-userdebug
Change-Id: I9dd676b4a0805dfacc04ab6f47982c3329951b4b
1 file changed