Use std::queue in InputConsumer_test

It's currently using BlockingQueue, which is designed to be used when
more than one thread is involved. Since these tests are single-threaded,
we should use a regular structure.

That way, things like calling ".pop" on an empty container won't block
indefinitely (which I accidentally did when developing some tests in
that file).

Bug: 297226446
Flag: EXEMPT refactor
Test: TEST=libinput_tests; m $TEST && $ANDROID_HOST_OUT/nativetest64/$TEST/$TEST
Change-Id: I5bceff32605431eb0571d5f9fafbb61427f78275