Switch to getModifiersEx() in PSurfaceAWT

[processing-bot]

Created by: benfry

We've not used getModifiersEx() in the past, because it (traditionally) has caused problems with some modifiers not being set properly. But now that it's deprecated, we need to make the switch and do a bunch of testing to make sure it's behaving the same way.

The fix is super easy. The debugging/testing is a bit time-consuming.

[processing-bot]

Created by: benfry

Passing all modifiers to the KeyEvent and MouseEvent constructors, though they aren't even being stored or used at the moment, so may not be a big deal.

Had trouble with this change in the past and rolled it back because it was optional at the time. This time around, just need to iron out any issues that come up:

• http://code.google.com/p/processing/issues/detail?id=1294
• http://code.google.com/p/processing/issues/detail?id=1332

[processing-bot]

Created by: github-actions[bot]

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