Opening OtherTagsEditor takes too long

[zbycz]

eg on Berlin (which has hunderds of tags) it takes 8 seconds on Macbook Air M1.
https://osmapp.org/node/240109189

There are probably too many useEffects and stuff like this in OtherTagsEditor.
Although the maximum number of tags in API is 256, so we don't have to virtualize the list.

### Solution:

Maybe we can just show some "Show more" button after 20 lines, which will satisfy the UX randomly clicking on it.