PGF: Clip lines/markers to maximum LaTeX dimensions.

[QuLogic]

PR Summary

This has been open for many years without any change to LaTeX, so it seems unlikely they are going to change how their parsing works.

Note that this does add clipping for filled paths, which we normally don't do, but it's so so far away, I don't think it'll be a problem.

Fixes #4482.

PR Checklist

• Has pytest style unit tests (and pytest passes).
• Is Flake 8 compliant (run flake8 on changed files to check).
• [n/a] New features are documented, with examples if plot related.
• [n/a] Documentation is sphinx and numpydoc compliant (the docs should build without error).
• [n/a] Conforms to Matplotlib style conventions (install flake8-docstrings and run flake8 --docstring-convention=all).
• [n/a] New features have an entry in doc/users/next_whats_new/ (follow instructions in README.rst there).
• [n/a] API changes documented in doc/api/next_api_changes/ (follow instructions in README.rst there).

[jklymak]

I'm surprised that is all there is to it, but if this helps...

[olegrog]

@QuLogic Thank you for this fix. However, it is not complete. If I understand correctly, you have clipped markers (in draw_markers) and lines (in _print_pgf_path) only, but there are still some unclipped \pgfsys@transformshift writings. For instance, fill_between with hatching uses this line and can lead to the same Dimension too large error. Could you apply the same clipping technique for that part of the draw_path function?