997 general info improvements backend

[Chelakhovl]

Model Adjustments:

Updated the Profile model to enforce stricter constraints:
Added character limit enforcement for name to ensure compliance with business requirements.
Validation in Serializers:

Enhanced validation logic in the ProfileOwnerDetailEditSerializer:
Added character limit validation for the name field (max 45 characters) with an appropriate error message: "The company name must not exceed 45 characters.".
Tests Adjustments:

Fixed failing tests that were incompatible with the updated official_name requirement.
Added or adjusted tests to ensure compliance with the following:
Validation errors are returned for name exceeding 45 characters.

Migrations:

Created and applied new migrations to enforce the updated constraints in the database.
TASK: #997