Incorrect geolinking for regional activities

[cmutel]

Similar to #140, but for regional activities. For example, for a RER activity (hydrogen cracking, APME):

The rule seems to be to take any regional input, even if it only partially covers the area. For example, from the same activity (in RER):

I had thought (and I think the documentation says) that transforming activities need to be fed by market inputs which completely cover the transforming activity location; instead, it appears to be the case that inputs must themselves be completely covered.

[cmutel]

The above example is caused by #152, but this still might be an issue.