feat(curriculum): add animations to block 4.2 of the English Curriculum

[DanielRosa74]

Checklist:

• I have read and followed the contribution guidelines.
• I have read and followed the how to open a pull request guide.
• My pull request targets the main branch of freeCodeCamp.
• I have tested these changes either locally on my machine, or GitPod.

[naomi-lgbt]

Looks like the tests need to be updated to accept the new scenes.

[moT01]

This is looking good @DanielRosa74. The playback seems pretty consistent. I am still getting quite a few steps where the audio gets cut off a little early. Here's a list of the task numbers:

15-19, 
23-24, 26, 30, 36-37, 39-43, 46-47, 50-53, 58, 68-70, 72-75, 94, 104-105

I used Chrome for testing. Do you want to take a quick look at some of those and see if you are seeing the same thing? And maybe make some adjustments. They could be off a little from adjustments you made because of the inconsistencies that were present from before.

[DanielRosa74]

This is looking good @DanielRosa74. The playback seems pretty consistent. I am still getting quite a few steps where the audio gets cut off a little early. Here's a list of the task numbers:

15-19, 
23-24, 26, 30, 36-37, 39-43, 46-47, 50-53, 58, 68-70, 72-75, 94, 104-105

I used Chrome for testing. Do you want to take a quick look at some of those and see if you are seeing the same thing? And maybe make some adjustments. They could be off a little from adjustments you made because of the inconsistencies that were present from before.

Changes made. The sentences were cutting off in those places indicated. This should fix them.

[DanielRosa74]

Looks like the tests need to be updated to accept the new scenes.

Solved.

[moT01]

LGTM 🎉