Can't type in workspace comments

[abchatra]

In /beta, workspace comments seems broken with latest blockly.

[abchatra]

Same for block comments too.

[microbit-matt-hillsdon]

I think this was the most recent Blockly upgrade (based on testing older deployments) but it doesn't seem to affect the keyboard nav demo environment with the same Blockly version.

[microbit-matt-hillsdon]

I think the focusableElement bits of Blockly's bubble.ts will need syncing with MakeCode's copy.

https://github.com/google/blockly/pull/9079/files#diff-496ffc2053f4ddbba117e20544ff4d5244316ef2d59a23b58c8e10fdcf51fe90 has the key change but there are some prior bits needed too.

[riknoll]

@microbit-matt-hillsdon we use the stock workspace svg comments, so i don't think the bubble should affect those. i will sync the block comment bubbles though!

[microbit-matt-hillsdon]

Tested in Blockly and raised RaspberryPiFoundation/blockly#9121 for the workspace comments. Block comments work there, so I think that part is just a matter of syncing code.

[microbit-robert]

Adding the following to textinput_bubble.ts is enough to get this working for block comments:

override getFocusableElement(): HTMLElement | SVGElement {
      return this.textArea;
}

Seems to be a Blockly bug where you can't click in the textarea to move the caret position or select text which I think also needs a separate upstream issue. Raised RaspberryPiFoundation/blockly#9125