Fall back to untranslated string rather than showing missing translation error (#8609)

test/components/views/settings/__snapshots__/KeyboardShortcut-test.tsx.snap

@@ -32,7 +32,7 @@ exports[`KeyboardShortcut doesn't render same modifier twice 1`] = `
     >
       <kbd>
          
-        missing translation: en|Ctrl
+        Ctrl
          
       </kbd>
       +
@@ -70,7 +70,7 @@ exports[`KeyboardShortcut doesn't render same modifier twice 2`] = `
     >
       <kbd>
          
-        missing translation: en|Ctrl
+        Ctrl
          
       </kbd>
       +
@@ -95,7 +95,7 @@ exports[`KeyboardShortcut renders alternative key name 1`] = `
 >
   <kbd>
      
-    missing translation: en|Page Down
+    Page Down
      
   </kbd>
   +

test/components/views/settings/tabs/user/__snapshots__/KeyboardUserSettingsTab-test.tsx.snap

@@ -8,7 +8,7 @@ exports[`KeyboardUserSettingsTab renders list of keyboard shortcuts 1`] = `
     <div
       className="mx_SettingsTab_heading"
     >
-      missing translation: en|Keyboard
+      Keyboard
     </div>
     <KeyboardShortcutSection
       category={
@@ -30,7 +30,7 @@ exports[`KeyboardUserSettingsTab renders list of keyboard shortcuts 1`] = `
         <div
           className="mx_SettingsTab_subheading"
         >
-          missing translation: en|Composer
+          Composer
         </div>
         <div>
            
@@ -59,7 +59,7 @@ exports[`KeyboardUserSettingsTab renders list of keyboard shortcuts 1`] = `
                   >
                     <kbd>
                        
-                      missing translation: en|Ctrl
+                      Ctrl
                        
                     </kbd>
                     +
@@ -103,7 +103,7 @@ exports[`KeyboardUserSettingsTab renders list of keyboard shortcuts 1`] = `
                   >
                     <kbd>
                        
-                      missing translation: en|Ctrl
+                      Ctrl
                        
                     </kbd>
                     +
@@ -145,7 +145,7 @@ exports[`KeyboardUserSettingsTab renders list of keyboard shortcuts 1`] = `
         <div
           className="mx_SettingsTab_subheading"
         >
-          missing translation: en|Navigation
+          Navigation
         </div>
         <div>
            
@@ -173,7 +173,7 @@ exports[`KeyboardUserSettingsTab renders list of keyboard shortcuts 1`] = `
                   >
                     <kbd>
                        
-                      missing translation: en|Enter
+                      Enter
                        
                     </kbd>
                   </KeyboardKey>