[BUGFIX] Allow config.linkVars to be added for linking to pages with …

…site config

Due to the refactoring yesterday, the TypoScript option
config.linkVars was removed, but is still a valid use-case to be added.

Resolves: #86054
Releases: master
Change-Id: I6d42c82f474668b62143982b8d9f2adf9b735935
Reviewed-on: https://review.typo3.org/58097
Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Frans Saris <franssaris@gmail.com>
Tested-by: Frans Saris <franssaris@gmail.com>
Reviewed-by: Wouter Wolters <typo3@wouterwolters.nl>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>

typo3/sysext/frontend/Classes/Typolink/PageLinkBuilder.php

@@ -181,6 +181,14 @@ public function build(array &$linkDetails, string $linkText, string $target, arr
         if ($siteOfTargetPage instanceof Site) {
             $queryParameters = [];
             parse_str($addQueryParams, $queryParameters);
+            // get config.linkVars and prepend
+            if ($tsfe->linkVars) {
+                $globalQueryParameters = [];
+                parse_str($tsfe->linkVars, $globalQueryParameters);
+                if (!empty($globalQueryParameters)) {
+                    $queryParameters = array_merge_recursive($globalQueryParameters, $queryParameters);
+                }
+            }
             unset($queryParameters['id'], $queryParameters['L']);
             if ($pageType) {
                 $queryParameters['type'] = (int)$pageType;