[fenix] For https://github.com/mozilla-mobile/fenix/issues/23263 - Replace @color/tab_tray_heading_icon_normal_theme with @color/accent_normal_theme

app/src/main/res/color/tab_icon.xml

@@ -3,6 +3,6 @@
    - License, v. 2.0. If a copy of the MPL was not distributed with this
    - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
 <selector xmlns:android="http://schemas.android.com/apk/res/android">
-    <item android:color="@color/tab_tray_heading_icon_normal_theme" android:state_selected="true" />
+    <item android:color="@color/accent_normal_theme" android:state_selected="true" />
     <item android:color="@color/tab_tray_heading_icon_inactive_normal_theme" />
 </selector>

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

@@ -136,7 +136,6 @@
     <color name="tab_tray_item_selected_background_normal_theme">@color/tab_tray_item_selected_background_dark_theme</color>
     <color name="tab_tray_item_divider_normal_theme">@color/photonDarkGrey10</color>
     <color name="tab_tray_item_media_background_normal_theme">@color/photonViolet50</color>
-    <color name="tab_tray_heading_icon_normal_theme">@color/photonViolet50</color>
     <color name="tab_tray_heading_icon_inactive_normal_theme">@color/photonLightGrey05</color>
     <color name="tab_tray_heading_icon_menu_normal_theme">@color/photonLightGrey05</color>
     <color name="tab_tray_item_thumbnail_background_normal_theme">@color/photonDarkGrey50</color>

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

@@ -203,7 +203,6 @@
     <color name="tab_tray_item_selected_background_normal_theme">#E5DFF4</color>
     <color name="tab_tray_item_divider_normal_theme">@color/photonLightGrey30</color>
     <color name="tab_tray_item_media_background_normal_theme">@color/photonInk20</color>
-    <color name="tab_tray_heading_icon_normal_theme">@color/photonInk20</color>
     <color name="tab_tray_heading_icon_inactive_normal_theme">@color/photonInk20A48</color>
     <color name="tab_tray_heading_icon_menu_normal_theme">@color/accent_normal_theme</color>
     <color name="tab_tray_item_thumbnail_background_normal_theme">@color/photonLightGrey10</color>