Fix delayed early binding class redeclaration error

If we bind the class to the runtime slot even if we're not the ones who have
performed early binding we'll miss the redeclaration erro

Fix delayed early binding class redeclaration error

If we bind the class to the runtime slot even if we're not the ones who have
performed early binding we'll miss the redeclaration error in the
ZEND_DECLARE_CLASS_DELAYED handler.

Closes GH-11226

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