Encrypted fields have an issue with truncating.

[MelissaAutumn]

Encrypted fields are encrypted and then converted to base64 as noted here: https://github.com/kvesteri/sqlalchemy-utils/blob/master/sqlalchemy_utils/types/encrypted/encrypted_type.py#L114

We don't take into account the length of the additions from the cipher or base64 encoding. We should do that, and then update the strings and do a data migration to nuke a known case with schedule's detail field: https://thunderbird.sentry.io/issues/6269890787/?project=4505428124827648&query=is%3Aunresolved%20issue.priority%3A%5Bhigh%2C%20medium%5D&referrer=issue-stream&statsPeriod=14d&stream_index=13