Change calculateResampledCoords to preserve PointerCoords data

Changed the logic of calculateResampledCoords to not dispose information
of PointerCoords.

Bug: 297226446
Flag: EXEMPT bugfix
Test: TEST=libinput_tests; m $TEST && $ANDROID_HOST_OUT/nativetest64/$TEST/$TEST --gtest_filter="ResamplerTest*"
Change-Id: I81285a65ebb571d11ba35bd18072b5ce18763d2d