fix: restrict condition name to 50 characters

[d-jeffery]

Description

Restrict character limit of condition down to 50 characters. Left the patterns as they were.

References

openfga/language#319

Review Checklist

• I have clicked on "allow edits by maintainers".
• I have added documentation for new/changed functionality in this PR or in a PR to openfga.dev [Provide a link to any relevant PRs in the references section above]
• The correct base branch is being used, if not main
• I have added tests to validate that the change in functionality is working as expected

[senojj]

is there a specific byte length that we are targeting, or are we only concerned about character count? Considering byte length, a maximum of 200 bytes (UTF-8 4-byte characters) would be valid for 50 characters.

if the assumption is that we are limiting to 50 8-bit characters for a maximum of 50 bytes, then more validations will need to be put into place.

[curfew-marathon]

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