Enable vue/no-mutating-props rule
What does this MR do?
Existing violations of this rule have been specifically ignored, as fixing each one requires non-trivial work to fix.
Addresses #297222 (closed), part of &5168.
Screenshots (strongly suggested)
n/a
Does this MR meet the acceptance criteria?
Conformity
- [-] Changelog entry
- [-] Documentation (if required)
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Code review guidelines - [-] Merge request performance guidelines
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Style guides - [-] Database guides
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Separation of EE specific content
Availability and Testing
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Review and add/update tests for this feature/bug. Consider all test levels. See the Test Planning Process. - [-] Tested in all supported browsers
- [-] Informed Infrastructure department of a default or new setting change, if applicable per definition of done
Edited by Mark Florian