Fix/task feedack notification fixed

[amriith]

Description

Fixed an issue where feedback notifications were not sent when task status updated. Now, emails are correctly triggered based on status changes.

Fixes # (issue)

Fixes the Notification Mailer feature which notify students if the task status is changed into either of these (redo, fail, fix_and_resubmit, feedback_exceeded, discuss, demonstrate, complete)

Please delete options that are not relevant.

Bug fix (non-breaking change which fixes an issue)

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Provide instructions so we can reproduce. Please also list any relevant details for your test configuration

• Test A
• Test B

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation if appropriate
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• I have created or extended unit tests to address my new additions
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules

If you have any questions, please contact @macite or @jakerenzella.