Simplify loading button state tracking

lib/music_library_web/live/scrobble_live/index.html.heex

@@ -24,12 +24,8 @@
             class="flex-1"
             phx-debounce="300"
           />
-          <.button type="submit" disabled={@loading}>
+          <.button type="submit" disabled={@loading} phx-disable-with={gettext("Searching...")}>
-            <%= if @loading do %>
+            <.icon name="hero-magnifying-glass" class="size-4" />{gettext("Search")}
-              <.icon name="hero-arrow-path" class="h-4 w-4 animate-spin mr-2" /> Searching...
-            <% else %>
-              <.icon name="hero-magnifying-glass" class="h-4 w-4 mr-2" /> Search
-            <% end %>
           </.button>
         </div>
       </.form>

priv/gettext/default.pot

@@ -182,6 +182,7 @@ msgid "Saving..."
 msgstr ""
 
 #: lib/music_library_web/components/record_components.ex
+#: lib/music_library_web/live/scrobble_live/index.html.heex
 #, elixir-autogen, elixir-format
 msgid "Search"
 msgstr ""
@@ -1421,3 +1422,8 @@ msgstr ""
 #, elixir-autogen, elixir-format
 msgid "Failed to search for release groups"
 msgstr ""
+
+#: lib/music_library_web/live/scrobble_live/index.html.heex
+#, elixir-autogen, elixir-format
+msgid "Searching..."
+msgstr ""

priv/gettext/en/LC_MESSAGES/default.po

@@ -182,6 +182,7 @@ msgid "Saving..."
 msgstr ""
 
 #: lib/music_library_web/components/record_components.ex
+#: lib/music_library_web/live/scrobble_live/index.html.heex
 #, elixir-autogen, elixir-format
 msgid "Search"
 msgstr ""
@@ -1421,3 +1422,8 @@ msgstr ""
 #, elixir-autogen, elixir-format, fuzzy
 msgid "Failed to search for release groups"
 msgstr ""
+
+#: lib/music_library_web/live/scrobble_live/index.html.heex
+#, elixir-autogen, elixir-format, fuzzy
+msgid "Searching..."
+msgstr ""