Fix dropdown text overflow

[Pezmc]

Description

Before

Text overflows and dropdown icon missing

After

Text cropped and dropdown icon visible

Related Issue(s)

Fixes #126

Checklist

• [x] I have read the contribution guidelines
• [x] Suitable unit/system level tests have been added and they pass
• [-] Documentation has been updated
  • [ ] Upgrade instructions
  • [ ] Configuration details
  • [ ] Concepts
• [-] Changes flowforge.yml?
  • [ ] Issue/PR raised on flowforge/helm to update ConfigMap Template
  • [ ] Issue/PR raised on flowforge/CloudProject to update values for Staging/Production

Labels

• [-] Backport needed? -> add the backport label
• [-] Includes a DB migration? -> add the area:migration label