[24.0 backport] c8d/inspect: Ignore manifest with missing config

[vvoland]

• backport: c8d/inspect: Ignore manifest with missing config #46238

(cherry picked from commit a64adda)

- What I did
Fixed failure to inspect image if any of its present manifest references an image config which isn't present locally.

- How I did it
Ignore c8d NotFound error when

- How to verify it

$ docker pull busybox:1.36.1
$ docker pull --platform linux/amd64 busybox:1.36.1
$ ctr content rm sha256:a416a98b71e224a31ee99cff8e16063554498227d2b696152a9c3e0aa65e5824 # Delete amd64 config

Before

$ docker image inspect busybox:1.36.1
[]
Error response from daemon: failed to read config content: content digest sha256:a416a98b71e224a31ee99cff8e16063554498227d2b696152a9c3e0aa65e5824: not found

After

$ docker image inspect busybox:1.36.1
[
    {
        "Id": "sha256:3fbc632167424a6d997e74f52b878d7cc478225cffac6bc977eedfe51c7f4e79",
        "RepoTags": [
            "busybox:latest"
        ],
        "RepoDigests": [
            "busybox@sha256:3fbc632167424a6d997e74f52b878d7cc478225cffac6bc977eedfe51c7f4e79"
        ],
        (...)
        "Architecture": "arm64",
        "Variant": "v8",
        "Os": "linux",
        "Size": 1920927,
        "VirtualSize": 1920927,
        (...)
    }
]

- Description for the changelog

- A picture of a cute animal (not mandatory but encouraged)

[thaJeztah]

LGTM