Fix timeremap clip always using proxies on rendering.

BUG: 454089

src/doc/kdenlivedoc.cpp

@@ -1839,8 +1839,15 @@ void KdenliveDoc::useOriginals(QDomDocument &doc)
 
     // replace proxy clips with originals
     QMap<QString, QString> proxies = pCore->projectItemModel()->getProxies(root);
-
     QDomNodeList producers = doc.elementsByTagName(QStringLiteral("producer"));
+    QDomNodeList chains = doc.elementsByTagName(QStringLiteral("chain"));
+    processProxyNodes(producers, root, proxies);
+    processProxyNodes(chains, root, proxies);
+}
+
+void KdenliveDoc::processProxyNodes(QDomNodeList producers, const QString &root, const QMap<QString, QString> &proxies)
+{
+
     QString producerResource;
     QString producerService;
     QString originalProducerService;

src/doc/kdenlivedoc.h

@@ -173,6 +173,7 @@ public:
     double getDocumentVersion() const;
     /** @brief Replace proxy clips with originals for rendering. */
     void useOriginals(QDomDocument &doc);
+    void processProxyNodes(QDomNodeList producers, const QString &root, const QMap<QString, QString> &proxies);
 
 private:
     QUrl m_url;