Migrate to Jetpack AI query endpoint

[selanthiraiyan]

Clone of https://github.com/woocommerce/woocommerce-ios/issues/12727

Problem

wpcom/v2/text-completion endpoint will no longer be maintained. We (mobile apps) use this ai-text-completion endpoint for AI generation-related features. Product Creation using AI, for example.

Solution

• Replace wpcom/v2/text-completion endpoint usage with wpcom/v2/jetpack-ai-query endpoint.
• Stop checking for ai-assistant feature as eligibility check. Instead, enable the AI features for all Jetpack sites. The wpcom/v2/jetpack-ai-query endpoint will take care of limiting usage. We can do this only after we add a way to advertise Jetpack AI and ask users to buy the plan. Otherwise they will face errors during the AI flow after the usage limit is exceeded.

Internal - p1714400452069809-slack-C02TQF5VAJD

[dangermattic]

🚫 Please add a type label (e.g. type: enhancement) and a feature label (e.g. feature: stats) to this issue.