[Urgent] Performance: don't subscribe all blocks to selected block

[ellatrix]

Description

Coblocks extends all blocks (through the editor.BlockListBlock filter) with a withSelect HoC, subscribing all blocks to the currently selected block. This means that on typing, the selected block updates, and all blocks on the page re-render because they are all subscribed to changes to the selected block.

I went through all functions in addAllEditorProps to which props is being passed to, but none of them seem to be using props.selected, so it looks like this subscription can be removed without further changes.

Screenshots

Types of changes

Use the React Dev Tools and enable highlight on re-render. Type in a block and watch all blocks re-render.

How has this been tested?

Acceptance criteria

Checklist:

• My code is tested
• My code follows accessibility standards
• My code has proper inline documentation
• I've included any necessary tests
• I've included developer documentation
• I've added proper labels to this pull request

[AnthonyLedesma]

Excellent find. Thank you so much for looking into this issue!