[fenix] For https://github.com/mozilla-mobile/fenix/issues/23193 - Remove @color/accent_on_dark_background_private_theme redirection

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

@@ -161,7 +161,6 @@
     <color name="scrimStart_private_theme">#F520123A</color>
     <color name="scrimEnd_private_theme">#F515141A</color>
     <color name="snackbar_private_theme">@color/photonInk20</color>
-    <color name="accent_on_dark_background_private_theme">@color/accent_high_contrast_private_theme</color>
     <color name="toolbar_start_gradient_private_theme">#7529A7</color>
     <color name="toolbar_center_gradient_private_theme">#492E85</color>
     <color name="toolbar_end_gradient_private_theme">#383372</color>

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

@@ -245,12 +245,12 @@
         <item name="scrimStart">@color/scrimStart_private_theme</item>
         <item name="scrimEnd">@color/scrimEnd_private_theme</item>
         <item name="snackbar">@color/snackbar_private_theme</item>
-        <item name="accentUsedOnDarkBackground">@color/accent_on_dark_background_private_theme</item>
+        <item name="accentUsedOnDarkBackground">@color/accent_high_contrast_private_theme</item>
         <item name="toolbarStartGradient">@color/toolbar_start_gradient_private_theme</item>
         <item name="toolbarCenterGradient">@color/toolbar_center_gradient_private_theme</item>
         <item name="toolbarEndGradient">@color/toolbar_end_gradient_private_theme</item>
         <item name="toolbarDivider">@color/toolbar_divider_color_private_theme</item>
-        <item name="fillLinkFromClipboard">@color/accent_on_dark_background_private_theme</item>
+        <item name="fillLinkFromClipboard">@color/accent_high_contrast_private_theme</item>
         <item name="syncDisconnected">@color/sync_disconnected_icon_fill_private_theme</item>
         <item name="syncDisconnectedBackground">@color/sync_disconnected_background_private_theme</item>
         <item name="swipeDeleteBackground">@color/swipe_delete_background_private_theme</item>