[BUGFIX] Remove double encoding of upgrade wizard.

Replace the <br>-Tags with a LF char and render the linebreak
using CSS.

Resolves: #83875
Releases: master
Change-Id: I4429d2929104f922d5f9c0e5c048617848e805e5
Reviewed-on: https://review.typo3.org/55987
Reviewed-by: Frank Naegler <frank.naegler@typo3.org>
Tested-by: Frank Naegler <frank.naegler@typo3.org>
Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Wouter Wolters <typo3@wouterwolters.nl>
Reviewed-by: Guido Schmechel <littlegee@web.de>
Tested-by: Guido Schmechel <littlegee@web.de>
Reviewed-by: Michael Oehlhof <typo3@oehlhof.de>
Reviewed-by: Joerg Boesche <typo3@joergboesche.de>
Reviewed-by: Georg Ringer <georg.ringer@gmail.com>
Tested-by: Georg Ringer <georg.ringer@gmail.com>

Build/Resources/Public/Sass/install.scss

@@ -403,3 +403,9 @@ a[data-toggle="collapse"] {
     table-layout: fixed;
     word-wrap: break-word;
 }
+
+.upgradeWizards-wizards-output {
+    .row-explanation {
+        white-space: pre-wrap;
+    }
+}

typo3/sysext/install/Classes/Updates/DatabaseRowsUpdateWizard.php

@@ -83,7 +83,7 @@ public function checkForUpdate(&$description)
                     1484066647
                 );
             }
-            $description .= '<br />' . htmlspecialchars($rowUpdater->getTitle());
+            $description .= LF . $rowUpdater->getTitle();
         }
 
         return $updateNeeded;

typo3/sysext/install/Resources/Private/Partials/Upgrade/UpgradeWizards.html

@@ -51,7 +51,7 @@
 	</div>
 	<div class="t3js-upgradeWizards-list-row-template">
 		<h4 class="t3js-upgradeWizards-list-row-title"></h4>
-		<div class="t3js-upgradeWizards-list-row-explanation"></div>
+		<div class="row-explanation t3js-upgradeWizards-list-row-explanation"></div>
 		<button class="btn btn-default t3js-upgradeWizards-list-row-execute" type="button">
 			Execute
 		</button>
@@ -104,7 +104,7 @@ <h4 class="t3js-upgradeWizards-input-title">{updateData.title}</h4>
 <hr>
 
 <h4>Available wizards</h4>
-<div class="t3js-upgradeWizards-wizards-output"></div>
+<div class="upgradeWizards-wizards-output t3js-upgradeWizards-wizards-output"></div>
 
 <hr>