AzureMonitorLinuxAgent failed to install on Ubuntu 26.04

Ubuntu 26 is out for some time and it is LTS. But the extensions fails to install for us

```
2026-05-13T22:11:00.9610634Z 2026-05-13 22:11:00Z Failure context:
2026-05-13T22:11:00.9611041Z ProvisioningState/transitioning: [ExtensionOperationError] Non-zero exit code: 51, /var/lib/waagent/Microsoft.Azure.Monitor.AzureMonitorLinuxAgent-1.41.0/./shim.sh -install
2026-05-13T22:11:00.9611362Z [stdout]
2026-05-13T22:11:00.9611672Z 2026/05/13 22:10:44 [Microsoft.Azure.Monitor.AzureMonitorLinuxAgent-1.41.0] Install,failed,51,Unsupported operating system: ubuntu 26.04
2026-05-13T22:11:00.9611982Z
2026-05-13T22:11:00.9612181Z
2026-05-13T22:11:00.9612394Z [stderr]
2026-05-13T22:11:00.9612658Z D-Bus property CPUAccounting is deprecated, ignoring assignment: CPUAccounting=no
2026-05-13T22:11:00.9612994Z Running as unit: install_c6a1b819-825e-4d25-8f8d-c932bf4a1e11.scope; invocation ID: 50a9c0f99fd74bca8bceac42ff487a50
2026-05-13T22:11:00.9613340Z
2026-05-13T22:11:00.9614743Z ##[warning] /subscriptions/XXXX/resourceGroups/ubuntu.2604.armarch/providers/Microsoft.Compute/virtualMachineScaleSets/ubuntu.2604.armarcht/virtualMachines/0: ProvisioningState/transitioning
2026-05-13T22:11:00.9633851Z ##[error]D:\a\_work\1\s\DeployQueues.dll(,): error : Deployment ubuntu.2604.armarch failed: At least one resource deployment operation failed. Please list deployment operations for details. Please see https://aka.ms/arm-deployment-operations for usage details.

```