Update the touchpad sensitivity levels and default sensitivity.

We provide a new sensitivity array with a lower default value in the middle. The UX results suggest the touchpad sensitivity setting is a little high.

Bug: 276962681
Test: manually
Change-Id: I37e8c690237b4854409e0e8eac7096d709115428
diff --git a/services/inputflinger/reader/mapper/TouchpadInputMapper.cpp b/services/inputflinger/reader/mapper/TouchpadInputMapper.cpp
index 33f368e..8838cc7 100644
--- a/services/inputflinger/reader/mapper/TouchpadInputMapper.cpp
+++ b/services/inputflinger/reader/mapper/TouchpadInputMapper.cpp
@@ -57,7 +57,7 @@
         {std::numeric_limits<double>::infinity(), 15.04, -857.758},
 };
 
-const std::vector<double> sensitivityFactors = {1, 2, 4, 5, 6, 7, 8, 9, 10, 11, 12, 14, 16, 18, 20};
+const std::vector<double> sensitivityFactors = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 14, 16, 18};
 
 std::vector<double> createAccelerationCurveForSensitivity(int32_t sensitivity,
                                                           size_t propertySize) {