Restore empty namespace

[priyansh08]

Describe the problem/challenge you have
A platform operator may have prepared a namespace in a cluster for future workloads.
When they want to migrate the cluster, Velero does not restore an empty namespace, leading to incomplete restoration of the cluster

Describe the solution you'd like
[A clear and concise description of what you want to happen.]

Anything else you would like to add:
[Miscellaneous information that will assist in solving the issue.]

Environment:

• Velero version (use velero version):
• Kubernetes version (use kubectl version):
• Kubernetes installer & version:
• Cloud provider or hardware configuration:
• OS (e.g. from /etc/os-release):

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[ashish-amarnath]

There is an existing issue open for this #1970
Closing this one in favor of #1970