Fix issue of user not being able to submit assignment when logged in root account

[suhaibabsi-inst]

refs: MBL-18064
affects: Student,Teacher
release note: Fixes issue of user not being able to submit assignment when logged in root account

What's changed

The main point of change of this PR resides in files:
AppEnvironmentOverride
GenericCellViewModel

This is to provide a clean way to pass a modified AppEnvironment with the correct baseURL that fits the current tab user is sitting at, which in this case is Course > Assignments

The rest are a consequence of those changes, which is basically to make sure views and classes are respecting what ever AppEnvironment instance is passed to them.

Test Plan

See ticket description.

Also, made testing for ordinary accounts for following use cases:

1. View Assignment details
2. View Submission details
3. New text and file assignment submission.
4. New text and file submission comment.
5. View submission comments, especially those with comments.

Screen Record

demo_consortia.mov

Checklist

• Follow-up e2e test ticket created
• A11y checked
• Tested on phone
• Tested on tablet
• Tested in dark mode
• Tested in light mode
• Approve from product

[inst-danger]

	Warnings
⚠️	One or more files are below the minimum test coverage 50%
⚠️	The total test coverage is below the minimum 90%

Release Note:

Fixes issue of user not being able to submit assignment when logged in root account

Affected Apps: Student, Teacher

MBL-18064

Coverage	New %	Master %	Delta
Canvas iOS	89.89%	90.15%	-0.26%
Core/Core/AppEnvironment/AppEnvironmentOverride.swift	6.06%	--	--
Core/Core/Planner/CalendarMain/ViewModel/PlannerViewModel.swift	0%	0%	0%
Core/Core/Planner/CalendarMain/Model/CalendarWeek.swift	0%	0%	0%
Core/Core/Extensions/CGSizeExtensions.swift	0%	--	--
Core/Core/Planner/CalendarMain/View/Calendar/CalendarCardInteractionState.swift	0%	0%	0%
Core/Core/Planner/CalendarMain/Model/PlannablesInteractor.swift	0%	0%	0%
Core/Core/Search/Model/SearchSupportButtonModel.swift	0%	--	--
Core/Core/Planner/CalendarMain/View/Calendar/ViewPreferences.swift	0%	0%	0%
Core/Core/Planner/CalendarMain/Model/CalendarDay.swift	0%	0%	0%
Core/Core/Courses/SmartSearch/View/CourseSmartSearchViewsProvider.swift	13.64%	--	--

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