[FIX] Missing visual validation and users selection field on creating team modal

[dougfabris]

Proposed changes (including videos or screenshots)

• Added visual validation if the team's name is missing:
  

• Fix: add members breaking when searching users

Additional Improvements:

• Brand new UserAutoCompleteMultiple.tsx mixed with UsersInput.tsx . I realized they are very similar components so I mixed them into a new unique component, now if we want to handle the users by id we can pass simply a prop handleById to him and voilà

Issue(s)

Steps to test or reproduce

Further comments

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1 out of 2 committers have signed the CLA.

✅ tassoevan
❌ dougfabris

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[dougfabris]

Closing this one in favor of #24529