False-positive warning for Google Africa Buildings dataset

[Bonkles]

Twitter user @s3lf sent this one in:

Edit: I created a sister PR over in the iD repo: openstreetmap/iD#8844

Need to figure out what's triggering this warning and fix it.

[bhousel]

Oh this is coming from the incompatible_source.js validator:
https://github.com/openstreetmap/iD/blob/develop/modules/validations/incompatible_source.js

We need to add an exception for the Google buildings dataset, both in RapiD and iD:
https://github.com/openstreetmap/iD/blob/ab8a07fb45d238c202f406faa08bb6e2b13c849c/modules/validations/incompatible_source.js#L17-L21

[Bonkles]

Fix is made to both iD and RapiD, should go out in next release of both apps.