Fix ImageDelegate

Restore the animated mediaInfo to eventHandler and make sure ImageDelegate uses the media helper size for the sourceSize.

src/eventhandler.cpp

@@ -3,6 +3,8 @@
 
 #include "eventhandler.h"
 
+#include <QMovie>
+
 #include <KLocalizedString>
 
 #include <Quotient/eventitem.h>
@@ -667,6 +669,9 @@ QVariantMap EventHandler::getMediaInfoFromFileInfo(const EventContent::FileInfo
             mediaInfo["width"_ls] = castInfo->imageSize.width();
             mediaInfo["height"_ls] = castInfo->imageSize.height();
 
+            // TODO: Images in certain formats (e.g. WebP) will be erroneously marked as animated, even if they are static.
+            mediaInfo["animated"_ls] = QMovie::supportedFormats().contains(mimeType.preferredSuffix().toUtf8());
+
             if (!isThumbnail) {
                 QVariantMap tempInfo;
                 auto thumbnailInfo = getMediaInfoFromFileInfo(castInfo->thumbnailInfo(), eventId, true);