Re-evaluate what gets presented in "select a script" option in chat view

[sangee2004]

Pre Req - Have more than 10 assistants created

Steps to reproduce the problem:

1. Go to chat view and use + ("select a script" option" )
   We see all the assistants being listed but with no scroll bar

There needs to be change in what gets presented in this drop down list:

This is what we expect to be presented in this drop down:

Tildy
The first three of "My" assistants
A link to My Assistants (the Build page)
A link to Explore Assistants

[sangee2004]

Tested with electron build - bf86f18e

We are now presented with the following list as expected: