fix(third_section): fix third section's resize direction

Signed-off-by: AmirReza_Ashouri <[email protected]>

Telegram/SourceFiles/mainwidget.cpp

@@ -2341,6 +2341,7 @@ void MainWidget::ensureThirdColumnResizeAreaCreated() {
 	}
 	auto moveLeftCallback = [=](int globalLeft) {
 		auto newWidth = mapToGlobal(QPoint(width(), 0)).x() - globalLeft;
+		newWidth = rtl() ? width() - newWidth : newWidth;
 		Core::App().settings().setThirdColumnWidth(newWidth);
 	};
 	auto moveFinishedCallback = [=] {