web/settings/audio: disable bitrate section when not applicable (#802)

web/src/routes/settings/audio/+page.svelte

@@ -1,4 +1,5 @@
 <script lang="ts">
+    import settings from "$lib/state/settings";
     import { t } from "$lib/i18n/translations";
 
     import { audioFormatOptions, audioBitrateOptions } from "$lib/types/settings";
@@ -23,7 +24,11 @@
     </Switcher>
 </SettingsCategory>
 
-<SettingsCategory sectionId="bitrate" title={$t("settings.audio.bitrate")}>
+<SettingsCategory 
+    sectionId="bitrate" 
+    title={$t("settings.audio.bitrate")}
+    disabled={["wav", "best"].includes($settings.save.audioFormat)}
+>
     <Switcher big={true} description={$t("settings.audio.bitrate.description")}>
         {#each audioBitrateOptions as value}
             <SettingsButton