Fix reading sharded zarr3 from local file system

[fm3]

The FileSystemVaultPath did not yet override readLastBytes, which is needed when reading zarr3 sharded datasets. Thus, the implementation of the parent class was used, which forwarded to readBytesAndEncoding, but that does not exist in the FileSystemDataVault.

Instead, now I implemented this in FileSystemVaultPath and adapted readBytesLocal to also support SuffixLength byte ranges.

Steps to test:

• Open a locally stored zarr3 sharded dataset, should see data

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• Updated changelog
• Needs datastore update after deployment