[ExpressionLanguage] Remove misleading warning #19960
Merged
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Fixes #17978
The warning I am removing was created after #8259 but the issue used an incorrect regex to show a potential problem which doesn't exist.
In my issue I show that it's not actually possible to inject control characters. I would still suggest for someone more involved in symfony development to investigate further, if the expression language is used in the security component this would need more than just a warning