[BUG] Panic setting password to Azure AD (Entra ID) user

[moio]

Rancher Server Setup

• Rancher version: 2.8.3
• Installation option (Docker install/Helm Chart): Helm Chart on AKS

Information about the Cluster

• Kubernetes version: AKS 1.27.7
• Cluster Type (Local/Downstream): Local

User Information

• What is the role of the user logged in? Admin

Describe the bug
Attempting to set a password for a user in the Azure AD authentication provider fails, a panic is produced in pod logs:

2024/05/13 12:15:57 [ERROR] Panic serving api request: 
goroutine 104951 [running]:
runtime/debug.Stack()
    /usr/lib64/go/1.21/src/runtime/debug/stack.go:24 +0x5e
github.com/rancher/norman/api.(*Server).ServeHTTP.func1()
    /go/pkg/mod/github.com/rancher/norman@v0.0.0-20240206180703-6eda4bc94b4c/api/server.go:175 +0x6d
panic({0x4150760?, 0xc0079a9350?})
    /usr/lib64/go/1.21/src/runtime/panic.go:914 +0x21f
github.com/rancher/rancher/pkg/auth/api/user.(*Handler).setPassword(0x7?, {0x4b0ef61?, 0x4?}, 0x0?, 0xc006c85560)
    /go/src/github.com/rancher/rancher/pkg/auth/api/user/user_actions.go:142 +0x4b9
github.com/rancher/rancher/pkg/auth/api/user.(*Handler).Actions(0x408ed00?, {0xc00afd9963?, 0x4b0f551?}, 0xc00226d0e0?, 0xc00456e450?)
    /go/src/github.com/rancher/rancher/pkg/auth/api/user/user_actions.go:48 +0x56
github.com/rancher/norman/api.handleAction(0xc006c85560?, 0xc006c85560?)
    /go/pkg/mod/github.com/rancher/norman@v0.0.0-20240206180703-6eda4bc94b4c/api/server.go:263 +0x77
github.com/rancher/norman/api.(*Server).handle(0xc000bc0c60, {0x55f4c80?, 0xc009e22220?}, 0xc003c5e9c0?)

To Reproduce

• Follow https://ranchermanager.docs.rancher.com/how-to-guides/new-user-guides/authentication-permissions-and-global-configuration/authentication-config/configure-azure-ad#1-register-rancher-with-azure to configure Azure AD authentication
  • for SUSE employees, use test credentials testuser1 from this table: Azure AD#Users
• log in as a normal user
  • for SUSE employees, use test credentials testuser3 from this table: Azure AD#Users
• log in as the admin user again
• click menu -> Users & Authentication -> normal user name (testuser3) -> three dots -> Edit config -> add a new password, click on Save

Result

Nondescriptive error in the UI:

Panic above in logs.

Expected Result

Operation success

Screenshots
See above