[FIX] web_editor: make the ace asset info line readable

The text was gray on gray... it is now forced to white.

Part of https://github.com/odoo/odoo/pull/34422
task-2026299

addons/web_editor/static/src/scss/web_editor.common.scss

@@ -313,6 +313,10 @@ a.o_underline {
         flex: 0 0 auto;
         padding: $grid-gutter-width/4 $grid-gutter-width/2;
         background-color: lighten($o-we-ace-color, 10%);
+
+        .o_ace_editor_resource_info {
+            color: $o-we-color-text-lighter;
+        }
     }
 
     #ace-view-editor {

addons/web_editor/static/src/xml/ace.xml

@@ -48,7 +48,7 @@
                 <button data-action="reset" type="button" class="btn btn-sm btn-danger"><i class="fa fa-undo"/> Reset</button>
                 <button data-action="format" type="button" class="btn btn-sm btn-link">Format</button>
             </div>
-            <span/>
+            <span class="o_ace_editor_resource_info"/>
             <div class="alert alert-warning alert-dismissible mt-2 mb-0" role="alert">
                 If you edit and save this file, you will never receive updates from Odoo anymore unless you reset your customizations.
                 <button type="button" class="close" aria-label="Close">