fix: Don't reuse another team members integrated task

[Dschoordsch]

If we reuse another team members integrated task, then we can end up in a situation where they're not on the team anymore and mess up the integration access.

Testing scenarios

• create a team with 2 users: Stan and Lili
• Lili starts Poker, adds Task ABC-1 from Jira and finishes the meeting
• Stan removes Lili from the team
• Stan starts a Poker meeting and also adds ABC-1
• check DB that the new task for ABC-1 has the userId of Stan
  • something along the lines of these queries

    r.db('actionDevelopment').table('NewMeeting').get('vQvshNiFz2')
    r.db('actionDevelopment').table('Task').getAll('vQvsROWc6I', 'vQsYJeTEVa')
    

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