Update AI Prompts - remove deprecated assist action and add context fields

[andrii-bodnar]

The Crowdin API updates the AI resource (prompts and prompt completions) in both Crowdin and Crowdin Enterprise. API client libraries should be updated accordingly.

Remove deprecated assist action (breaking):

• The previously deprecated assist AI prompt action is fully removed: it is dropped from the prompt action enum, and the related assist prompt-completion resource and override-prompt-values schemas are removed. Clients should drop assist from any prompt action handling.

New context fields:

• AI prompt forms: projectContext replaces the now-deprecated old project-context field, and prompt completion forms add projectDescription (deprecating the prior field).
• Enterprise basic-mode prompt configs (pre_translate, alignment, qa_check) gain an organizationContext flag to include the organization name and internal description in the prompt context, with corresponding enterprise prompt-completion override-prompt-values resources.

References:

• AI
• Crowdin Enterprise: AI