[🐞] fadeDuration specified in area options is not honored for tooltips

[techfg]

Describe the bug

When specifying an area specific fadeDuration, tooltip fade is using the default fadeDuration instead of the area specific one.

For example, in the following config, the duration for OH should be 500 but it's using 3000:

$('#myimg').mapster({
   fadeDuration: 3000,
   showToolTip: true,
   toolTip: 'Hello there',
   areas: [{
    key: 'OH',
    fadeDuration: 500
   }]
});

Reproduction

https://jsfiddle.net/techfg/jd8hnb37/2/

Steps to reproduce

1. Go to repro link
2. Hover over the drip to display the tooltip

Environment Info

All browsers, all OS

Expected Behavior

Expected Result:
Fade should be 500 milliseconds

Actual Result:
Fade is 3000 milliseconds

Additional Information

N/A