[ErrorHandler] trigger deprecations for `@final` properties#45360

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nicolas-grekas merged 2 commits intosymfony:6.1from

nicolas-grekas:eh-final-props

Feb 10, 2022

Commits on Feb 10, 2022

[ErrorHandler] trigger deprecations for `@final` properties
nicolas-grekas
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Add more tests

fancyweb
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nicolas-grekas
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