fix: allow atomic storage in regex

[deepshekhardas]

fix

[Ayush4958]

Hi @deepshekhardas
could you add PR description to it
or if this was discussed with maintainers in prior pls attach discussion source
so its easy to review

[ksen0]

@deepshekhardas I noticed multiple simultaneous PRs that do not follow contributor guidelines (https://p5js.org/contribute/contributor_guidelines/): ask to be assigned and get approval for approach before starting work, please do not make many simultaneous requests for assignment with no context, please do not submit PRs without assignment and approval). Further activity that violates contributor guidelines may result in temporary account suspension.

I will close this PR because it's missing context as @Ayush4958 said, please reopen and link to the issue if it actually was discussed and approved. Thanks!