Skip voice search hands free tests on low ram

Low ram devices do not support hot word, so skip the test.

Bug: 69587018
Test: cts-tradefed run cts-dev -m CtsContentTestCases
-t android.content.cts.AvailableIntentsTest#testVoiceSearchHandsFree

Change-Id: I76ff81578be54ed9f695548601c53f4f73c3400d
1 file changed