Skip modifying volumes owned by other CSI drivers

[ConnorJC3]

What type of PR is this?

/kind bug

What this PR does / why we need it:

Fixes issue (3) from https://github.com/kubernetes/kubernetes/pull/124151#issuecomment-2152647568 - Today, the external-resizer will attempt to modify any PVC awaiting modification without checking for if it matches the local CSI driver.

Which issue(s) this PR fixes:

N/A

Special notes for your reviewer:

No test exercises syncPVC, so I could not update the tests for this case. I have manually tested the change against multiple drivers.

Does this PR introduce a user-facing change?:

Fixed a bug causing external-resizer to attempt to modify volumes owned by other CSI drivers

[msau42]

/lgtm /approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: ConnorJC3, msau42

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Needs approval from an approver in each of these files: - ~~[OWNERS](https://github.com/kubernetes-csi/external-resizer/blob/master/OWNERS)~~ [msau42] Approvers can indicate their approval by writing `/approve` in a comment Approvers can cancel approval by writing `/approve cancel` in a comment

[msau42]

/cherry-pick release-1.11

[k8s-infra-cherrypick-robot]

@msau42: new pull request created: #422

In response to [this](https://github.com/kubernetes-csi/external-resizer/pull/419#issuecomment-2253122678): >/cherry-pick release-1.11 Instructions for interacting with me using PR comments are available [here](https://git.k8s.io/community/contributors/guide/pull-requests.md). If you have questions or suggestions related to my behavior, please file an issue against the [kubernetes-sigs/prow](https://github.com/kubernetes-sigs/prow/issues/new?title=Prow%20issue:) repository.