Disable emoji popup in quoted field
### Summary
When typing code, colons are used a lot and the emoji popup gets triggered and that is almost never the desired outcome.
### Steps to reproduce
1. Start a code review, make a comment
2. Type ``` triple backticks to start a code block
3. Start writing a python function, type a colon:

It also pops-up when making the indentation on the next line:

issue