src/vs/workbench/contrib/terminal/browser/terminalView.ts/TerminalViewPane/focus
class TerminalViewPane:	override focus() {
		if (this._terminalService.connectionState === TerminalConnectionState.Connecting) {
			// If the terminal is waiting to reconnect to remote terminals, then there is no TerminalInstance yet that can
			// be focused. So wait for connection to finish, then focus.
			const activeElement = document.activeElement;
			this._register(this._terminalService.onDidChangeConnectionState(() => {
				// Only focus the terminal if the activeElement has not changed since focus() was called
				// TODO hack
				if (document.activeElement === activeElement) {
					this._focus();
				}
			}));

			return;
		}
		this._focus();
	}