fix: Add password visibility toggle and strength checker to teacher invitation registration form

[besque]

This pr fixes issue #2304

Description

Fixed missing JavaScript functionality in teacher invitation registration form. Added prefix to match main registration form's field IDs, which restored:

• Password reveal icon functionality
• Password strength checker
• Matches behavior of main registration form

Root cause:

• The invited teacher form was using different field IDs than the main registration form
• Added prefix = 'teacher_signup' to InvitedTeacherForm class to match the main registration form's ID pattern

• This ensures the JavaScript can properly bind to the password input fields

  Bug

  When teachers were invited to join a school, the password registration form was missing the reveal password icon and strength checker that exists in the main registration form.

  Fixed

  

How Has This Been Tested?

1. Logged in as a school admin
2. Invited a teacher to join the school using an unused email address
3. Followed the registration link
4. Verified that:
   • Password reveal (eye) icon appears and functions correctly
   • Password strength checker shows and updates while typing
   • Behavior matches the main registration form exactly
   • Both password and confirm password fields work as expected

Checklist:

• [ ] My change requires a change to the documentation.
• [ ] I have updated the documentation accordingly.
• [ ] I have linked this PR to a ZenHub Issue.

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This change is 

[besque]

Ah, I suppose the tests are failing because of the prefix, the test would be expecting the field name without the prefix. I've modified the InvitedTeacherForm in teach.py to keep the original field names while still getting the ID's we want.

Hope this fixes it, really sorry 😅

Please check and let me know, Thank you!

[faucomte97]

@besque It looks like you're getting a different error now - seems like name isn't an attribute of the fields

[besque]

My apologies, I'm looking into this

[faucomte97]

No worries! The test logs should hopefully have clear error messages but if you have any questions feel free to ask 😄

[besque]

Ahh, I was trying to acess the field's name from the field object, I've updated the code to acess the field name directly from the dictionary key instead.

This should do the job

[faucomte97]

Hi @besque, I might be wrong but I think you just need to update the failing test so that the correct ID is used - similarly to how this test uses the full ID with the prefix too

[besque]

hey @faucomte97,

You're right, I've updated it so that even the prefix is included so it shouldn't give that error anymore.

Sorry for the delay 😅