fix(new-convo): empty email identity handled

[SySagar]

What does this PR do?

Fixes #709

Type of change

• Bug fix (non-breaking change which fixes an issue)
• Chore (refactoring code, technical debt, workflow improvements)
• Enhancement (small improvements)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

Checklist

Required

• Read Contributing Guide
• Self-reviewed my own code
• Tested my code in a local environment
• Commented on my code in hard-to-understand areas
• Checked for warnings, there are none
• Removed all console.logs
• Merged the latest changes from main onto my branch with git pull origin main
• My changes don't cause any responsiveness issues

Additional note:

So if you disable the add participant then the email identity drop box hides itself. Howsoever I have still handled it. Also I wanna ask if there exist no email identity then should be disable the entire form rather than just the participant.

[BlankParticle]

This prevents users from creating convos without having a identity assigned to them
We can actually create convos with internal org members if we dont have a email identity.

So what you might consider is check when user adds a email/contact participant and block that if they dont have a email identity, not block the participants popup

[SySagar]

@BlankParticle please check,