Disable Audio Normalization in iOS to fix pitch and speed issues (#8240)

Co-authored-by: Jordan Rushing <jordanmichaelrushing@users.noreply.github.com>

src/components/playbackSettings/playbackSettings.js

@@ -259,6 +259,7 @@ function loadForm(context, user, userSettings, systemInfo, apiClient) {
     context.querySelector('.chkEnableHi10p').checked = appSettings.enableHi10p();
     context.querySelector('.chkEnableCinemaMode').checked = userSettings.enableCinemaMode();
     context.querySelector('#selectAudioNormalization').value = userSettings.selectAudioNormalization();
+    context.querySelector('.fldAudioNormalization').classList.toggle('hide', browser.iOS);
     context.querySelector('.chkEnableNextVideoOverlay').checked = userSettings.enableNextVideoInfoOverlay();
     context.querySelector('.chkRememberAudioSelections').checked = user.Configuration.RememberAudioSelections || false;
     context.querySelector('.chkRememberSubtitleSelections').checked = user.Configuration.RememberSubtitleSelections || false;

src/components/playbackSettings/playbackSettings.template.html

@@ -231,7 +231,7 @@ <h2 class="sectionTitle">
             ${HeaderAudioAdvanced}
         </h2>
 
-        <div class="selectContainer">
+        <div class="selectContainer fldAudioNormalization">
             <select is="emby-select" id="selectAudioNormalization" label="${LabelSelectAudioNormalization}">
                 <option value="Off">${Off}</option>
                 <option value="TrackGain">${LabelTrackGain}</option>

src/plugins/htmlAudioPlayer/plugin.js

@@ -115,6 +115,11 @@ class HtmlAudioPlayer {
             let val = options.url;
             console.debug('playing url: ' + val);
             import('../../scripts/settings/userSettings').then((userSettings) => {
+                if (browser.iOS) {
+                    // createMediaElementSource breaks playbackRate and pitch on iOS WebKit
+                    return;
+                }
+
                 let normalizationGain;
                 if (userSettings.selectAudioNormalization() == 'TrackGain') {
                     normalizationGain = options.item.NormalizationGain