Tutorial Validation Does Not Rendering pxt_controls_for Blocks

Describe the bug
For tutorial validation, for loop blocks cannot be rendered in the validation message. In tutorialCodeValidation.tsx's method getRuleBlocksAsync, symbol in const symbol = blocksInfo.blocksById[id]; is undefined, and so the block doesn't get rendered.

To Reproduce
Steps to reproduce the behavior:

1. Download 'Magical Fishes file from the Yelm OneNote on Tutorial Validation or modify any tutorial and add to any step (Make sure tutorial validation is turned on and required is enabled in the rules) or create a tutorial step that uses a for loop block.

```requiredTutorialBlock
	for (let index = 0; index <= 4; index++) {
	
}
```~

2. Once the tutorial is loaded and you're on the step with a 'for-loop' block, click the 'Next' Button.

Expected behavior
You should see the validation message with no 'for-loop' block rendered

Screenshots