fix: support empty array as object #4999
Merged
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Supersedes #4363.
Fixes an issue with the use of
EMPTY_ARRAY_AS_OBJECT
andPRESERVE_EMPTY_OBJECTS
in the serialization context.Since the CollectionNormalizer was taking over the serialization of all iterables, the Symfony serializer was not called when normalizing a "raw" collection.
Adding a better supports method fixes the issue.
The supports method is not cacheable anymore since it relies on the context.