Disable button mouse over effects when all options are disabled

### Current Behavior

Using button node and disabling pointerdown, pointerup and click event in order to just show an icon I still get an effect when mouse over button (changing mousepointer and changing button color).

### Expected Behavior

Disabling pointerdown, pointerup and click event, no effect on mouse over should occur

### Steps To Reproduce

Button node with disabled options pointerdown, pointerup, click event. Then move mouse over button.

### Environment

- Dashboard version: 1.12
- Node-RED version: 4.05
- Node.js version:
- npm version:
- Platform/OS: Win10
- Browser: Firefox

### Have you provided an initial effort estimate for this issue?

I have provided an initial effort estimate