Replaced Creation Floating Action Buttons for Cases

[Bonsai8863]

Proposed changes

• Replaced FAB for creation of Incident Responses, RFIs, and RFTs.

Related issues

• #6738
• #6756

Checklist

• [ ] I consider the submitted work as finished
• [ ] I tested the code for its functionality
• [ ] I wrote test cases for the relevant uses case (coverage and e2e)
• [ ] I added/update the relevant documentation (either on github or on notion)
• [ ] Where necessary I refactored code to improve the overall quality