fix: forms on pages TYPO3 13 renders itself can be submitted

The .form-island wrapper existed only in the form page type (/form), so
on pages TYPO3 13 renders completely (e.g. the EP ambassador page) the
form's hx-target="closest .form-island" found nothing and submitting did
nothing. The island with its loading overlay now comes from the form
plugin's template (Render.html), on full pages and in /form alike; the
page type renders just the plugin again.

Co-Authored-By: Claude Opus 5.5 <[email protected]>

packages/ep_theme/Configuration/TypoScript/Extensions/Form.typoscript

@@ -4,6 +4,8 @@
 
 plugin.tx_form.view {
     templateRootPaths.10 = EXT:ep_theme/Resources/Private/Templates/Form/
+    # Spinner.html for Render.html
+    partialRootPaths.10 = EXT:ep_theme/Resources/Private/Partials/Form/
 }
 
 plugin.tx_form.settings.yamlConfigurations {

packages/ep_theme/Configuration/TypoScript/Page/Form.typoscript

@@ -15,21 +15,15 @@ tx_eptheme_form {
         debug = 0
     }
 
-    10 = FLUIDTEMPLATE
+    10 = CONTENT
     10 {
-        templateName = Island
-        templateRootPaths.0 = EXT:ep_theme/Resources/Private/Templates/Form/
-        partialRootPaths.0 = EXT:ep_theme/Resources/Private/Partials/
-
-        variables.forms = CONTENT
-        variables.forms {
-            table = tt_content
-            select {
-                where = {#CType} = 'form_formframework'
-                orderBy = sorting
-            }
-            # Only the plugin (Templates/Form/Render.html): header and frame stay on the static page
-            renderObj =< tt_content.form_formframework.20
+        table = tt_content
+        select {
+            where = {#CType} = 'form_formframework'
+            orderBy = sorting
         }
+        # Only the plugin (Templates/Form/Render.html, a .form-island): header and frame stay on
+        # the static page
+        renderObj =< tt_content.form_formframework.20
     }
 }