Fix expects abstract constraint validator test case

[cardoso123inkt]

Update AbstractConstraintValidatorTestCase::assertHandlesIncorrectConstraintType() to create a Stub instead of a mock

[Copilot]

Pull request overview

This PR improves the AbstractConstraintValidatorTestCase test helper class by making three key improvements: switching from a mock to a stub for the Constraint object in incorrect constraint type tests, adding defensive expectations to prevent unintended method calls, and standardizing the use of self:: over static:: for consistency.

Changes:

• Replace createMock() with createStub() for Constraint objects in assertHandlesIncorrectConstraintType() to better reflect the intended usage (the Constraint object shouldn't have method calls verified)
• Add expectations to ensure no methods are called on executionContext and violationBuilder in scenarios where they shouldn't be used
• Standardize from static:: to self:: for test expectations throughout the file

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