[release-1.32] chore: fix ShareQuota nil issue

[k8s-infra-cherrypick-robot]

This is an automated cherry-pick of #2433

/assign andyzhangx

none

[andyzhangx]

/retest
/lgtm

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: andyzhangx, k8s-infra-cherrypick-robot

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[k8s-ci-robot]

@k8s-infra-cherrypick-robot: The following test failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
pull-azurefile-csi-driver-e2e-capz	e6099cd	link	true	/test pull-azurefile-csi-driver-e2e-capz

Full PR test history. Your PR dashboard. Please help us cut down on flakes by linking to an open issue when you hit one in your PR.

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