[Egyptian Text] Keep aspect ratio in smaller variants

When signs are arranged in quadrats, their aspect ratio is sometimes altered.
For example:

Respecting the ancient Egyptian sense of style and proportions, this should generally be avoided.

I recommend **keeping the aspect ratio in smaller variants**.

(In cases where this seems unavoidable, Egyptian writers did not simply squeeze the whole glyph, but changed its shape.)

No file or test is named in the issue. Start by locating the code and tests responsible for generating smaller variants when signs are arranged in quadrats. Done means smaller variants preserve the original aspect ratio, with coverage for the illustrated distortion case.

Written by the indexing model from the issue text.