New values for the category_uid and class_uid of the base_event

[rroupski]

The change of the Other enum value from -1 to 99 affected the base event's category_uid and class_uid, both are now 99.

This is a proposal to change the base event's category_uid and class_uid values to 0.

[rroupski]

The votes ends EOD Thursday, Feb 9th 2023.

[floydtree]

Voting results are in favor of this proposal but is pending implementation.