For #24055 - Replace snackbar attribute with actionPrimary attribute

app/src/main/res/drawable/fenix_snackbar_background.xml

@@ -4,6 +4,6 @@
    - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
 <shape xmlns:android="http://schemas.android.com/apk/res/android"
     android:shape="rectangle">
-    <solid android:color="?snackbar" />
+    <solid android:color="?actionPrimary" />
     <corners android:radius="8dp" />
 </shape>

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

@@ -256,7 +256,6 @@
     <color name="accent_high_contrast_private_theme">#AA71FF</color>
     <color name="neutral_private_theme">@color/photonGrey20</color>
     <color name="neutral_faded_private_theme">#1FFBFBFE</color>
-    <color name="snackbar_private_theme">@color/photonInk20</color>
     <color name="sync_disconnected_icon_fill_private_theme">@color/photonYellow70</color>
     <color name="sync_disconnected_background_private_theme">#5B5846</color>
     <color name="swipe_delete_background_private_theme">@color/photonInk20</color>

app/src/main/res/values/styles.xml

@@ -80,7 +80,6 @@
         <item name="neutralFaded">@color/neutral_faded_normal_theme</item>
         <item name="destructive">@color/fx_mobile_text_color_warning</item>
         <item name="disabled">@color/fx_mobile_text_color_disabled</item>
-        <item name="snackbar">@color/fx_mobile_action_color_primary</item>
         <item name="accentUsedOnDarkBackground">@color/fx_mobile_text_color_accent</item>
         <item name="toolbarStartGradient">@color/fx_mobile_layer_color_1</item>
         <item name="toolbarCenterGradient">@color/fx_mobile_layer_color_1</item>
@@ -272,7 +271,6 @@
         <item name="neutralFaded">@color/neutral_faded_private_theme</item>
         <item name="destructive">@color/fx_mobile_private_text_color_warning</item>
         <item name="disabled">@color/fx_mobile_private_text_color_disabled</item>
-        <item name="snackbar">@color/snackbar_private_theme</item>
         <item name="accentUsedOnDarkBackground">@color/accent_high_contrast_private_theme</item>
         <item name="toolbarStartGradient">@color/fx_mobile_private_layer_color_4_start</item>
         <item name="toolbarCenterGradient">@color/fx_mobile_private_layer_color_4_center</item>