fix: remove "hydra:" remaining prefix

[vincentchalamon]

Additionally, api-platform/admin must be updated because of the following error (with hydra_prefix: false):

[burned42]

Unfortunately it seems like this introduced a BC break for me with v4.0.3 as even with hydra_prefix: true, the hydra prefix is gone now.

For now I brought back the old behavior by downgrading api-platform/state and api-platform/validator to v4.0.2.

[vincentchalamon]

Hi @burned42,

On which schema did you found that the hydra prefix was gone? On a resource schema (with json-ld format), the hydra prefix is still present (cf. API Platform Demo tests). But on an error schema, the hydra prefix has been removed (in 4.0.3). @soyuka can explain further more about this removal.

[burned42]

@vincentchalamon yes, that's right. Sorry if I was a bit unspecific here.

I was only talking about the error schema.

[vincentchalamon]

@burned42 @soyuka is currently working on a fix: #6704

[burned42]

@vincentchalamon @soyuka awesome, thank you :)

[burned42]

As mentioned in #6701 (comment) it seems like the fix included in version 4.0.4 works 👍