Ignore three finger trackpad for nav handle long press

To disable Omient trigger by three finger trackpad

Bug: 342143522
Flag: com.android.launcher3.ignore_three_finger_trackpad_for_nav_handle_long_press
Test: Manual

Change-Id: Ic283a4a376a6e628d6c16d6fd4088a9f5e10a0c5
# Conflicts:
#	aconfig/launcher.aconfig