Change var to val in SensorLocation object

Fixes: 342956711
Test: manually, enroll fingerprint on a device with UDFPS
    1. Change resolution
    2. Go to lockscreen
    3. Verify the size and location of the fingerprint icon
Flag: com.android.systemui.device_entry_udfps_refactor
Change-Id: I0ec6b267b02fb5101299f3628275ec579133502e

packages/SystemUI/src/com/android/systemui/biometrics/domain/interactor/FingerprintPropertyInteractor.kt

@@ -98,11 +98,11 @@ constructor(
         ) { unscaledSensorLocation, scale ->
             val sensorLocation =
                 SensorLocation(
-                    unscaledSensorLocation.sensorLocationX,
-                    unscaledSensorLocation.sensorLocationY,
-                    unscaledSensorLocation.sensorRadius,
+                    naturalCenterX = unscaledSensorLocation.sensorLocationX,
+                    naturalCenterY = unscaledSensorLocation.sensorLocationY,
+                    naturalRadius = unscaledSensorLocation.sensorRadius,
+                    scale = scale
                 )
-            sensorLocation.scale = scale
             sensorLocation
         }
 

packages/SystemUI/src/com/android/systemui/biometrics/shared/model/SensorLocation.kt

@@ -16,18 +16,18 @@
 
 package com.android.systemui.biometrics.shared.model
 
-/** Provides current sensor location information in the current screen resolution [scale]. */
+/**
+ * Provides current sensor location information in the current screen resolution [scale].
+ *
+ * @property scale Scale to apply to the sensor location's natural parameters to support different
+ *   screen resolutions.
+ */
 data class SensorLocation(
     private val naturalCenterX: Int,
     private val naturalCenterY: Int,
-    private val naturalRadius: Int
+    private val naturalRadius: Int,
+    private val scale: Float = 1f
 ) {
-    /**
-     * Scale to apply to the sensor location's natural parameters to support different screen
-     * resolutions.
-     */
-    var scale: Float = 1f
-
     val centerX: Float
         get() {
             return naturalCenterX * scale

packages/SystemUI/src/com/android/systemui/keyguard/ui/view/layout/sections/DefaultDeviceEntrySection.kt

@@ -147,8 +147,9 @@ constructor(
                 deviceEntryIconViewModel.get().udfpsLocation.value?.let { udfpsLocation ->
                     Log.d(
                         "DeviceEntrySection",
-                        "udfpsLocation=$udfpsLocation" +
-                            " unusedAuthController=${authController.udfpsLocation}"
+                        "udfpsLocation=$udfpsLocation, " +
+                            "scaledLocation=(${udfpsLocation.centerX},${udfpsLocation.centerY}), " +
+                            "unusedAuthController=${authController.udfpsLocation}"
                     )
                     centerIcon(
                         Point(udfpsLocation.centerX.toInt(), udfpsLocation.centerY.toInt()),