Terminal: Update on set focus after closing tab

Amends 84155e8354

This change sets the focus also on terminals that get destroyed via exit
or Ctrl+D

Change-Id: I9a96ae5b257f3e8a93db7efb4e7d4468b287c143
Reviewed-by: Marcus Tillmanns <marcus.tillmanns@qt.io>

src/plugins/terminal/terminalpane.cpp

@@ -200,6 +200,11 @@ QWidget *TerminalPane::outputWidget(QWidget *parent)
             removeTab(index);
         });
 
+        connect(m_tabWidget, &QTabWidget::currentChanged, this, [this](int index) {
+            if (auto widget = m_tabWidget->widget(index))
+                widget->setFocus();
+        });
+
         auto terminalWidget = new TerminalWidget(parent);
         m_tabWidget->addTab(terminalWidget, Tr::tr("Terminal"));
         setupTerminalWidget(terminalWidget);
@@ -221,10 +226,6 @@ void TerminalPane::removeTab(int index)
 
     TerminalCommands::instance().paneActions().closeTerminal.setEnabled(m_tabWidget->count() > 1);
 
-    if (auto terminal = currentTerminal()) {
-        terminal->setFocus();
-    }
-
     emit navigateStateUpdate();
 }