fix: Fixes 2 bugs in advanced panel

[kof]

Description

Use case 1

1. add a property
2. copy all
3. paste into any text editor
4. see that recent one is not copied

Use case 2

1. add 2 properties
2. use backspace to reset the second property
3. focus should be on the first value after deleting the second one
4. use backspace to delete the first property
5. see focus jumped to search

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