🖊️ Add error for else statement without if statement #5099

[boryanagoncharenko]

Fixes #5099
Add a custom error in levels 5-7 when there is an else statement when there is no if right before it.

How to test
Run the following snippets in levels 5-7 and check that the custom error is appropriate:

if answer is yes print 'great!'
print 'correct'
else print 'wrong'

else print 'wrong'

[jpelay]

Works!

[mergify]

Thank you for contributing! Your pull request is now going on the merge train (choo choo! Do not click update from main anymore, and be sure to allow changes to be pushed to your fork).

[mergify]

Thank you for contributing! Your pull request is now going on the merge train (choo choo! Do not click update from main anymore, and be sure to allow changes to be pushed to your fork).