String controls within the LabVIEW UI should disregard characters in unsupported keyboard shortcuts

[adambro]

String controls, such as the Text control of the Configure Build Text VI, should ignore keyboard shortcuts which they don't support instead of interpreting these as the alphabet character key pressed.

For example, currently CTRL+A isn't supported to select all. Instead the character 'a' is added to the string at the current position.

It would be better if combinations of key presses that are not supported are disregarded. For example, I have a habit of hitting CTRL+S to save whatever it is I'm working on frequently. If I inadvertently do this within a string control on a dialog then I will find I've just added 's' to the string.