private void updateDisplayContents(String userText) {
		pendingTextUpdate = userText;
		updateManager.updateLater();
	}
Overridden to allow for the setting of text without showing the completion window.  This
is useful for setting the current value to be edited before the using initiates editing.

@param text The text to set on this text field.
Ghidra/Framework/Docking/src/main/java/docking/widgets/DropDownTextField.java