update RHCOS 4.16 bootimage metadata to 416.94.202404301731-0

These changes will update the RHCOS 4.16 boot image metadata. Notable
changes in this update is:

COS-2744: Switch RHCOS from RHEL 9.4 Beta to GA

This change was generated using:

```
plume cosa2stream --target data/data/coreos/rhcos.json                \
    --distro rhcos --no-signatures --name 4.16-9.4                   \
    --url https://rhcos.mirror.openshift.com/art/storage/prod/streams \
    x86_64=416.94.202404301731-0                                      \
    aarch64=416.94.202404301731-0                                     \
    s390x=416.94.202404301731-0                                       \
    ppc64le=416.94.202404301731-0
```

Author: mike-nguyen