Fix type piracy - Githubissues

Checklist

[x] Appropriate tests were added
[x] Any code changes were done in a way that does not break public API
[ ] ~All documentation related to code changes were updated~ no docs yet
[x] The new code follows the contributor guidelines, in particular the SciML Style Guide and COLPRAC.
[ ] ~Any new documentation only uses public API~ no docs yet

I somehow missed that Symbolics.array_term had a size keyword argument. :sweat_smile: