chore: Roll out AIGeneratedDiscussion to all users

[tianrunhe]

Description

Fixes #8730

Testing scenarios

• Paid Team

  • Select a paid team
  • Run a retro meeting
  • See the AI generated discussion prompt in the discussion phase
  • In the meeting summary page, see discussion question for each topics instead of topic summary

• Free Trials

  • Create a new org/team
  • Run a retro meeting
  • See the AI generated discussion prompt in the discussion phase, with the free trial message
  • In the meeting summary page, see discussion question for each topics instead of topic summary

Final checklist

• I checked the code review guidelines
• I have added Metrics Representative as reviewer(s) if my PR invovles metrics/data/analytics related changes
• I have performed a self-review of my code, the same way I'd do it for any other team member
• I have tested all cases I listed in the testing scenarios and I haven't found any issues or regressions
• Whenever I took a non-obvious choice I added a comment explaining why I did it this way
• I added the label Skip Maintainer Review Indicating the PR only requires reviewer review and can be merged right after it's approved if the PR introduces only minor changes, does not contain any architectural changes or does not introduce any new patterns and I think one review is sufficient'
• PR title is human readable and could be used in changelog

[nickoferrall]

Tested and it works for me!

We still have the AI Summary in the discussion thread too, so there's both the AI Summary & Discussion Prompt, which is too much text IMO, but I think we can remove the AI Summary in a follow-up PR.

[tianrunhe]

Tested and it works for me!

We still have the AI Summary in the discussion thread too, so there's both the AI Summary & Discussion Prompt, which is too much text IMO, but I think we can remove the AI Summary in a follow-up PR.

Yes I plan to get to that later in a separate PR