Update kbd shortcuts only if kbd shortcuts pane is enabled

Related feedback:
- https://github.com/uBlockOrigin/uBlock-issues/issues/386#issuecomment-611806957

src/js/commands.js

@@ -37,7 +37,20 @@
 if ( µBlock.canUpdateShortcuts ) {
     self.addEventListener(
         'webextFlavor',
-        ( ) => { µBlock.canUpdateShortcuts = vAPI.webextFlavor.major < 74; },
+        ( ) => {
+            const µb = µBlock;
+            µb.canUpdateShortcuts = vAPI.webextFlavor.major < 74;
+            if ( µb.canUpdateShortcuts === false ) { return; }
+            vAPI.storage.get('commandShortcuts').then(bin => {
+                if ( bin instanceof Object === false ) { return; }
+                const shortcuts = bin.commandShortcuts;
+                if ( Array.isArray(shortcuts) === false ) { return; }
+                µb.commandShortcuts = new Map(shortcuts);
+                for ( const [ name, shortcut ] of shortcuts ) {
+                    vAPI.commands.update({ name, shortcut });
+                }
+            });
+        },
         { once: true }
     );
 }

src/js/start.js

@@ -95,17 +95,6 @@ const initializeTabs = async function() {
 
 /******************************************************************************/
 
-const onCommandShortcutsReady = function(commandShortcuts) {
-    if ( Array.isArray(commandShortcuts) === false ) { return; }
-    µb.commandShortcuts = new Map(commandShortcuts);
-    if ( µb.canUpdateShortcuts === false ) { return; }
-    for ( const entry of commandShortcuts ) {
-        vAPI.commands.update({ name: entry[0], shortcut: entry[1] });
-    }
-};
-
-/******************************************************************************/
-
 // To bring older versions up to date
 
 const onVersionReady = function(lastVersion) {
@@ -204,7 +193,6 @@ const onFirstFetchReady = function(fetched) {
     fromFetch(µb.restoreBackupSettings, fetched);
     onNetWhitelistReady(fetched.netWhitelist);
     onVersionReady(fetched.version);
-    onCommandShortcutsReady(fetched.commandShortcuts);
 };
 
 /******************************************************************************/
@@ -226,7 +214,6 @@ const fromFetch = function(to, fetched) {
 
 const createDefaultProps = function() {
     const fetchableProps = {
-        'commandShortcuts': [],
         'dynamicFilteringString': [
             'behind-the-scene * * noop',
             'behind-the-scene * image noop',