REST API allowed users to pass in targetOpportunity, targetPerson,
targetCompany etc when trying to create a noteTarget or a taskTarget.
The request went through, we got back a 201, the record was created, but
the relationship was never established since the FK was empty in the
database.
This PR enforces users to send in the property with the `Id` suffix for
consistency. So, the user sends in targetOpportunityId, targetPersonId,
targetCompanyId etc.
<p align="center">
<img width="854" height="480" alt="image"
src="https://github.com/user-attachments/assets/ed50a623-68d4-4266-baf1-e94a657c3fd4"
/>
</p>
If the users try to send without the "Id" suffix, they get an error
explaining what to do.
<p align="center">
<img width="854" height="480" alt="image"
src="https://github.com/user-attachments/assets/8bab399b-7a04-4b6a-86b5-6f0e0b1ecd5d"
/>
</p>
Additionally, the documentation itself contains the correct property
names.
<p align="center">
<img width="854" height="480" alt="image"
src="https://github.com/user-attachments/assets/83e51cd6-8ef7-4a4d-8696-ab37cc4a9dd6"
/>
</p>
Finally, the filters also enforce this "Id" suffix convention in the GET
request.
<p align="center">
<img width="854" height="480" alt="image"
src="https://github.com/user-attachments/assets/168a2f09-1242-40fa-bd84-1f7d9c60357c"
/>
</p>
Edit: Updated error messages after the screenshots were taken to make
them a little generic. Secondly, this PR also fixes the issue of morph
relation ids and objects not appearing in the response (when depth is
1).
