Surface the "Invite Members" button to the main navigation

[joepavitt]

Description

• Adds "Invite Members" button to the primary navigation (desktop view only for now)
• Cleans up messaging in the "Invite Members" dialog to make it clear you can invite multiple users
• Adds support for ?action=invite to the Team Members page which will automatically open the "Invite Members" dialog upon navigation

Related Issue(s)

Closes #4181

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 78.62%. Comparing base (01934d5) to head (bd5ce13).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #4186   +/-   ##
=======================================
  Coverage   78.62%   78.62%           
=======================================
  Files         286      286           
  Lines       13097    13097           
  Branches     2926     2926           
=======================================
  Hits        10298    10298           
  Misses       2799     2799           

Flag	Coverage Δ
backend	78.62% <ø> (ø)

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