fix issue with display of fleet and cattle agent status on cluster dashboard view with very limited user permissions

[aalves08]

Summary

Fixes #12685

NOTE: started with the 2.10 issue repro. Will do a forward port to 2.11

Occurred changes and/or fixed issues

• fix issue with display of fleet and cattle agent status on cluster dashboard view with very limited user permissions (as per Rancher UI New component health checks "Cattle" and "Fleet" fail for standard users with only project membership #12680 (comment))

Technical notes summary

• The View Monitoring custom role allows for the user to have access to the namespaces that were the condition to display the boxes, but the user didn't have permissions to view Deployments and Statefulsets which are the resources that hold the status information

Areas or cases that should be tested

Repro steps as per #12680 (comment)

Areas which could experience regressions

Screenshot/Video

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