feat: Context menu for advanced style panel

[kof]

#4816

Description

1. right click in advanced
2. copy all
3. copy one
4. paste
5. search now works for properties AND values
6. backspace in add styles input when its empty now also closes the input same as esc

Steps for reproduction

1. click button
2. expect xyz

Code Review

• hi @kof, I need you to do
  • conceptual review (architecture, feature-correctness)
  • detailed review (read every line)
  • test it on preview

Before requesting a review

• made a self-review
• added inline comments where things may be not obvious (the "why", not "what")

Before merging

• tested locally and on preview environment (preview dev login: 0000)
• updated test cases document
• added tests
• if any new env variables are added, added them to .env file

[kof]

@johnsicili needed to merge, please test when you get time on main