Endless-sky: Orbits name area is too small

[tehhowch]

1714 is back:

746bc21 reduced the amount of space in which the system and planet names can be printed, causing some planet and station names to overflow:

Looks like the SVG asset used for the new orbit + key was the one from the original art and not the one from https://github.com/endless-sky/endless-sky/commit/67980b72c4758abcfd8f24cf4ea231d255c95456

[tehhowch]

As of 4c2396d209a63

If #3070 is added, that would solve this issue as it uses the orbit scene with the larger name space.

[endless-sky]

Fixed in 0c78ae0, leaving lots of extra space this time:

I think I like it better than the awkward angled bump on the old one, anyway.

[tehhowch]

I concur, that is nicer yet