Add the ability to obtain the topology of attached hosts to the datastore

[ptrvsrg]

What this PR does / why we need it:

Fixes a controller crashloop that occurs when vSphere topology tags (region/zone) are assigned to datastore objects. The topology host resolution code did not handle Datastore managed object types, causing a panic/nil pointer dereference during full sync or volume provisioning.

Which issue(s) this PR fixes

Fixes #3919

How was this tested?

• Manual testing on a vSphere environment with region/zone tags on datastores
• Verified controller no longer crashes and correctly skips datastore objects during host resolution

Release note:

Fixed a bug where the vSphere CSI controller would crashloop when topology tags (region/zone) were assigned to datastore objects in vCenter.

[linux-foundation-easycla]

The committers listed above are authorized under a signed CLA.

• ✅ login: ptrvsrg / name: Sergey Petrov (dcb52f7)

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