Hide html elements if the parameter is set

[VladyslavTy]

Change description

Hide elements basing on cookie value. This cookie is set if the hide_elements query parameter is set while enroll user in course.
Refactor previous solution with iframe to make it more flexible.

Type of change

• Bug fix (fixes an issue)
• New feature (adds functionality)

Related issues

Fix #1

Checklists

Development

• Lint rules pass locally
• Application changes have been tested thoroughly
• Automated tests covering modified code pass

Security

• Security impact of change has been considered
• Code follows company security practices and guidelines

Code review

• Pull request has a descriptive title and context useful to a reviewer. Screenshots or screencasts are attached as necessary
• "Ready for review" label attached and reviewers assigned
• Changes have been reviewed by at least one other contributor
• Pull request linked to task tracker where applicable

[github-actions]

Checking git merge conflicts against https://github.com/openedx/edx-platform.git

Comparing with	open-release/nutmeg.master
Benchmark conflicts with main	302
Current conflicts	301
Summary	Resolves 1 existing conflicts. Amazing!

Comparing with	master
Benchmark conflicts with main	332
Current conflicts	331
Summary	Resolves 1 existing conflicts. Amazing!