Fix CellContentDimensionsTest

- due to comment font scale issue we were failing. applying fontscale to 1.0f

Test: Presubmit
Bug: 324910285
Flag: NONE
Change-Id: Id2bd12f5b8bb1249e6adba647fceaa0b581bc897

tests/src/com/android/launcher3/util/CellContentDimensionsTest.kt

@@ -39,6 +39,7 @@ class CellContentDimensionsTest {
         val config =
             Configuration(runningContext.resources.configuration).apply {
                 this.densityDpi = DisplayMetrics.DENSITY_DEFAULT
+                fontScale = 1.0f
             }
         context = runningContext.createConfigurationContext(config)
         iconSizeSteps = IconSizeSteps(context!!.resources)