fix(Gate): error when persisting too long sharing process error messages

[nicoprow]

Description

When the gate writes back sharing process errors to the business partner record's sharing state, the amount of errors could be too long, leading to an error when trying to save them to the database.

Now the error message is cut off, if too long.

Pre-review checks

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• DEPENDENCIES are up-to-date. Dash license tool. Committers can open IP issues for restricted libs.
• Copyright and license header are present on all affected files