Use edit button instead of flashing cursor

[Akeboshiwind]

I like how it looks here: https://codapi.org/try/sql/

[refset]

Note how on there you can alternatively click on the snippets twice to make the cursor show - you don't have to use the 'Edit' button. Not sure if there's a reason why 'twice' is necessary. i.e. currently we only have to click 'once' to activate the input and move the cursor to wherever we click

[Akeboshiwind]

Yeah, not sure why that could be 🤔
I think for us keeping it as a live editor is fine