Copy paste functionality of the function block is not working in Playground

[PlabanP1]

Describe the bug

Issues with the playground.

• The copy paste functionality is not working for the Functions block. Whenever the block is being copied( Ctrl C) and pasted(Ctrl V), instead of creating a similar block, it is getting changed with random numbers.
• The XML is not getting updated when we are adding new blocks.
• The mutator window is not expanding properly to showcase the blocks properly.

To Reproduce

Steps to reproduce the behavior:

1. Open Advanced Playground
2. Go to Functions.
3. Drag the 1st block
4. Select the block, Copy and paste the block.
5. Check the XML as well.

Expected behavior

• Duplicate functions blocks should be created when we copy paste a block.
• XML should be updated whenever blocks are added to the playground.

Screenshots

https://screenshot.googleplex.com/8pef6pQqJoeosGd
https://screenshot.googleplex.com/sDJjBvXhHmjjHLh

Desktop (please complete the following information):

• OS: ChromeOS
• Browser: Chrome
• Version 108

Smartphone (please complete the following information):

• Device: [e.g. iPhone6]
• OS: [e.g. iOS8.1]
• Browser [e.g. stock browser, safari]
• Version [e.g. 22]

Stack Traces

Replace with error stack trace.

Additional context