[BUGFIX] Prevent RuntimeException in NewPages view

Page types might contain a static string as
label instead of a locallang key. To prevent
a RuntimeException, the static string is used
as the default now.

Resolves: #103315
Releases: main, 12.4
Change-Id: I50858fe6500766e5a66b83e9e72be82c35218ca2
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/83294
Tested-by: Oliver Bartsch <bo@cedev.de>
Reviewed-by: Oliver Bartsch <bo@cedev.de>
Tested-by: core-ci <typo3@b13.com>

typo3/sysext/backend/Resources/Private/Templates/Page/NewPages.html

@@ -226,7 +226,7 @@ <h2 class="mt-4">
                                         <f:for each="{line.pageTypes}" as="typegroup" key="group">
                                             <optgroup label="{f:translate(key: '{group}')}">
                                                 <f:for each="{typegroup}" as="type">
-                                                    <option data-icon='{core:icon(identifier: "{type.icon}")}' value="{type.value}">{f:translate(key: '{type.label}')}</option>
+                                                    <option data-icon='{core:icon(identifier: type.icon)}' value="{type.value}">{f:translate(key: type.label, default: type.label)}</option>
                                                 </f:for>
                                             </optgroup>
                                         </f:for>