Disables mouse event suppression on macOS when the mouse is hidden and moved

[a740g]

This PR fixes a bug on macOS where mouse events are suppressed for 0.25 seconds when _MOUSEMOVE is used. The issue is resolved by calling CGAssociateMouseAndMouseCursorPosition(). Note that the event suppression bypass only happens when the mouse is hidden.

Additionally, as discussed on Discord, this PR prevents _FULLPATH$ from throwing an error when an empty string is passed.

[RhoSigma-QB64]

Thanks for the _FULLPATH$ change, maybe you wanna change this too https://discord.com/channels/975381912350752819/975389657212805160/1329530280155021443 as according to the discussion all supported platforms don't care about double separators, this wouldn't be a breaking change.

[grymmjack]

✅ Tested and working great on this mac:

I ran the example you shared in the discord thread ahead of checking out and trying with the PR code and this new code does seem more responsive/fluid.

Both had trackpad intertia - I didn't try with mouse just trackpad.

[a740g]

Thanks for the _FULLPATH$ change, maybe you wanna change this too https://discord.com/channels/975381912350752819/975389657212805160/1329530280155021443 as according to the discussion all supported platforms don't care about double separators, this wouldn't be a breaking change.

No problem. Done. I ran some tests and it looks like we are good on all platforms.

[a740g]

✅ Tested and working great on this mac:

I ran the example you shared in the discord thread ahead of checking out and trying with the PR code and this new code does seem more responsive/fluid.

Both had trackpad intertia - I didn't try with mouse just trackpad.

Thank you @grymmjack