Always render disabled settings as disabled (#7014)

This is to prevent user confusion about whether or not a setting exists, or even what its value is. By rendering it with `disabled=true` the user is at least aware that the setting is set to a specific value, though we could (and should) do better in the future to communicate *why* a setting is disabled.

src/components/views/settings/tabs/user/PreferencesUserSettingsTab.tsx

@@ -288,14 +288,10 @@ export default class PreferencesUserSettingsTab extends React.Component<IProps,
     private renderGroup(
         settingIds: string[],
         level = SettingLevel.ACCOUNT,
-        includeDisabled = false,
     ): React.ReactNodeArray {
-        if (!includeDisabled) {
-            settingIds = settingIds.filter(SettingsStore.isEnabled);
-        }
-
         return settingIds.map(i => {
-            return <SettingsFlag key={i} name={i} level={level} />;
+            const disabled = !SettingsStore.isEnabled(i);
+            return <SettingsFlag key={i} name={i} level={level} disabled={disabled} />;
         });
     }
 
@@ -343,7 +339,7 @@ export default class PreferencesUserSettingsTab extends React.Component<IProps,
 
                 <div className="mx_SettingsTab_section">
                     <span className="mx_SettingsTab_subheading">{ _t("Spaces") }</span>
-                    { this.renderGroup(PreferencesUserSettingsTab.SPACES_SETTINGS, SettingLevel.ACCOUNT, true) }
+                    { this.renderGroup(PreferencesUserSettingsTab.SPACES_SETTINGS, SettingLevel.ACCOUNT) }
                 </div>
 
                 <div className="mx_SettingsTab_section">