Add tests to #edit and #update when user is trying to change criteria when marks have already been released

[chickenwaddle77]

Proposed Changes

The PR adds new test coverage for the #edit and #update methods for CriteriaController. When the user is authenticated and authorised, and tries to edit/update the criteria after marks have not been released, there should be a flash message with an error, and the appropriate response code is returned. This PR adds two tests for these two methods.
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Type of Change

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Type	Applies?
🚨 Breaking change (fix or feature that would cause existing functionality to change)
✨ New feature (non-breaking change that adds functionality)
🐛 Bug fix (non-breaking change that fixes an issue)
🎨 User interface change (change to user interface; provide screenshots)
♻️ Refactoring (internal change to codebase, without changing functionality)
🚦 Test update (change that only adds or modifies tests)	X
📦 Dependency update (change that updates a dependency)
🔧 Internal (change that only affects developers or continuous integration)

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[chickenwaddle77]

Supercedes issue #7526

[coveralls]

Pull Request Test Coverage Report for Build 15146668697

Details

• 40 of 40 (100.0%) changed or added relevant lines in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.01%) to 91.951%

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Totals
Change from base Build 15126063264:	0.01%
Covered Lines:	41937
Relevant Lines:	44923

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💛 - Coveralls

[david-yz-liu]

@chickenwaddle77 good work!