[fenix] For https://github.com/mozilla-mobile/fenix/issues/23086 - Update the dark theme Action Secondary color to DarkGrey10

app/src/main/java/org/mozilla/fenix/theme/FirefoxTheme.kt

@@ -52,7 +52,7 @@ private val darkColorPalette = FirefoxColors(
     gradientStart = PhotonColors.Violet70,
     gradientEnd = PhotonColors.Violet40,
     actionPrimary = PhotonColors.Violet70,
-    actionSecondary = PhotonColors.DarkGrey50,
+    actionSecondary = PhotonColors.DarkGrey10,
     formDefault = PhotonColors.LightGrey05,
     formSelected = PhotonColors.Violet40,
     formSurface = PhotonColors.DarkGrey05,

app/src/main/res/values-night/colors.xml

@@ -28,7 +28,7 @@
     <!-- Primary button, Snackbar, Floating action button, Controls -->
     <color name="fx_mobile_action_color_primary" tools:ignore="UnusedResources">@color/photonViolet70</color>
     <!-- Secondary button, Chip -->
-    <color name="fx_mobile_action_color_secondary" tools:ignore="UnusedResources">@color/photonDarkGrey50</color>
+    <color name="fx_mobile_action_color_secondary" tools:ignore="UnusedResources">@color/photonDarkGrey10</color>
     <!-- Checkbox default, Radio button default -->
     <color name="fx_mobile_action_color_form_default" tools:ignore="UnusedResources">@color/photonLightGrey05</color>
     <!-- Checkbox selected, Radio button selected -->