fix: some UI improvements of the pre-request script tab - INS-3711

[ihexxa]

Changes:

• add green dot to pre-request script and doc tab when they are active
• re-org and add script snippet menu items

Snapshots:

Menu Items:

Tab title:

[CurryYangxx]

I think it would look nicer if the dot could be aligned horizontally with the text

[ihexxa]

I think it would look nicer if the dot could be aligned horizontally with the text

Sounds reasonable, updated.

[jackkav]

🎸