Merge #163: Fix list mode tab selector overlapping filter popups

f88693c fix: [#129] CSS bug. Torrent list mode buttons on top of filters. (Jose Celano)
3052cdf chore: remove unused empty component (Jose Celano)

Pull request description:

  The buttons for selecting the list mode (Default|Table) were rendered on top of the category/tags popup div, mixing up both components.

  Problem:

  ![image](https://github.com/torrust/torrust-index-frontend/assets/58816/e4e9481d-cde9-4fdb-ad13-579940493cf9)

  Fixed:

  ![image](https://github.com/torrust/torrust-index-frontend/assets/58816/0318138f-734d-4e79-b8ba-b143cfa66f7f)

Top commit has no ACKs.

Tree-SHA512: 6bf1b23b2a2039a35bb695038112b971d7ba943c0c3935ad9d6aea286341ab4eac56064f90a5f1fd711072cd1738cb6421ab88a38b36450f50f7c5b74c2d6289

Author: josecelano

components/TorrustSelect.vue

@@ -10,7 +10,7 @@
         </div>
       </div>
     </label>
-    <div ref="dropdownContent" tabindex="0" class="flex flex-col gap-2 p-2 mt-3 border rounded-lg shadow dropdown-content border-base-content/20 bg-base-100">
+    <div ref="dropdownContent" tabindex="0" class="flex flex-col gap-2 p-2 mt-3 border rounded-lg shadow dropdown-content border-base-content/20 bg-base-100 z-[1]">
       <template v-if="props.search">
         <div class="">
           <input