fix: [GSK-4424] return checks with type in params when retrieving conversation

[henchaves]

This PR enables to properly create/update a chat test case (conversation) using the checks from another conversation.

For example:

conversation_01 = hub.conversations.retrieve(conversation_id)

# List of checks containing built-in and custom
conversation_01.checks 

# Before it was returning an error due to missing param 'type'
hub.conversations.create(...., checks=conversation_01.checks)

[linear]

GSK-4424 Passing custom check with params to `conversations.create` raises an Validation error

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud