[BUG] Deletion of restoring index cause null pointer

[eliskovets]

Describe the bug

Deletion of restoring index cause null pointer

Caused by: java.lang.NullPointerException: Cannot invoke "org.opensearch.index.store.remote.metadata.RemoteSegmentMetadata.getMetadata()" because "mdFile" is null

Related component

No response

To Reproduce

1. Start restore index from snapshot
2. Delete index
3. Start restore index from snapshot again
4. Watch null pointer exceptions in the logs

Expected behavior

No null pointer exceptions.

Additional Details

Plugins
ec2-discovery
s3-repository

Screenshots
If applicable, add screenshots to help explain your problem.

Host/Environment (please complete the following information):

• OS: [e.g. iOS]
• Version 2.18.0

Additional context
Add any other context about the problem here.