message: Correclty set the focus after splitting
diff: @@ -785,10 +785,18 @@ export class MainWebUi extends ThemeableElementBase implements keybindingmanager
  this._refreshSplitLayout();
  if (newTabWidget != null) {
  const element = this._splitLayout.getEmptyContentByTabWidget(newTabWidget);
  + if (element != null) {
  newTabWidget.focus();
  if (element instanceof EmptyPaneMenu) {
  element.focus();
  }
  + } else {
  + const tabWidget = this._splitLayout.getTabWidgetByTabContent(tabContentElement);
  + tabWidget.focus();
  + if (tabContentElement instanceof EtTerminal || tabContentElement instanceof EtViewerTab) {
  + tabContentElement.focus();
  + }
  + }
  }
  }
  