Streamline network calls for resetting level progress 🛠🛠

[heatherlogan-scottlogic]

Here's what happens when you reset level progress:

• openai/clear clears the chat history for given level.
• email/clear clears the emails for given level.
• openai/addHistory adds the "Level progress reset" info message to given level's chat history

These should be one request.

AC:

regression check tat resetting level progress works as expected

GIVEN frontend in preview mode (so that react doesn't do its double render thing) npm run preview
WHEN the user changes from one level to another (check specifically switching in and out of sandbox)
THEN there should be only one api call made of type fetch

Here's how you quickly find out what api calls are being made that are fetch type. Note that the CombinedFonts call is of type xhr, therefore we ignore it.