Fix keyboard vibration on unsupported device

Add the fixed keyboard amplitude check to ensure
we only depend on keyboard vibration settings for
supported devices.

Bug: 326027376
Test: atest VibrationSettingsTest
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:761251b91bae3ca462111e26b3f9a0a34146d71d)
Merged-In: I2c6f6272abe7d39f02647456e3adfffd00bac660
Change-Id: I2c6f6272abe7d39f02647456e3adfffd00bac660