fix(oci): enforce blob size while streaming

[gaborbernat]

Failure

OCI monolithic and chunked uploads enforce max_file_size_bytes after staging the body at
crates/peryx-ecosystem-oci/src/registry/uploads.rs:36-42 and :191-204. stream_into and append_chunk have no
limit.

A credential allowed to push can fill disk beyond the configured policy limit. A multi-request upload can exceed the
limit during any PATCH and remain stored in its session.

Expected fix

Enforce the remaining byte budget during each upload form. Define whether overflow removes or preserves a session. Cover
each protocol path.