[BUGFIX] Allow RTE yml presets in LocalConfiguration

ext:rte_ckeditor declares the default config yml preset pointers
of TYPO3_CONF_VARS['RTE'] in its ext_localconf.php file.
This file is loaded after LocalConfiguration.php.
The patch wraps the declarations in guards to ensure any
previously set pointers are not blindly reset.

Change-Id: Ic945d988f436aab7453b7f7fba8694bbf3580b1d
Resolves: #81537
Releases: master, 8.7
Reviewed-on: https://review.typo3.org/53181


Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Frans Saris <franssaris@gmail.com>
Reviewed-by: Georg Ringer <georg.ringer@gmail.com>
Tested-by: Georg Ringer <georg.ringer@gmail.com>
Reviewed-by: Josef Glatz <josef.glatz@typo3.org>
Tested-by: Josef Glatz <josef.glatz@typo3.org>
Reviewed-by: Benni Mack <benni@typo3.org>
Tested-by: Benni Mack <benni@typo3.org>

typo3/sysext/rte_ckeditor/ext_localconf.php

@@ -24,6 +24,12 @@ if (TYPO3_MODE === 'BE' && !(TYPO3_REQUESTTYPE & TYPO3_REQUESTTYPE_CLI)) {
 }
 
 // Register the presets
-$GLOBALS['TYPO3_CONF_VARS']['RTE']['Presets']['default'] = 'EXT:rte_ckeditor/Configuration/RTE/Default.yaml';
-$GLOBALS['TYPO3_CONF_VARS']['RTE']['Presets']['minimal'] = 'EXT:rte_ckeditor/Configuration/RTE/Minimal.yaml';
-$GLOBALS['TYPO3_CONF_VARS']['RTE']['Presets']['full'] = 'EXT:rte_ckeditor/Configuration/RTE/Full.yaml';
+if (empty($GLOBALS['TYPO3_CONF_VARS']['RTE']['Presets']['default'])) {
+    $GLOBALS['TYPO3_CONF_VARS']['RTE']['Presets']['default'] = 'EXT:rte_ckeditor/Configuration/RTE/Default.yaml';
+}
+if (empty($GLOBALS['TYPO3_CONF_VARS']['RTE']['Presets']['minimal'])) {
+    $GLOBALS['TYPO3_CONF_VARS']['RTE']['Presets']['minimal'] = 'EXT:rte_ckeditor/Configuration/RTE/Minimal.yaml';
+}
+if (empty($GLOBALS['TYPO3_CONF_VARS']['RTE']['Presets']['full'])) {
+    $GLOBALS['TYPO3_CONF_VARS']['RTE']['Presets']['full'] = 'EXT:rte_ckeditor/Configuration/RTE/Full.yaml';
+}