Add check to not resample when resample time equals motion event time

Included SampleTimeEqualsEventTime from TouchResampling_test.cpp into
InputConsumerResampling_test.cpp, and added the missing logic in
LegacyResampler to pass the test.

Bug: 297226446
Flag: EXEMPT refactor
Test: TEST=libinput_tests; m $TEST && $ANDROID_HOST_OUT/nativetest64/$TEST/$TEST --gtest_filter="InputConsumerResamplingTest*"
Change-Id: I8ff9a263ea79eed1b814d2b1ce0b7efb5ade584e