[VirtualMachine][UltraSSD] Enable diskIOPSReadWrite and diskMBpsReadWrite for VM and VMSS

[yamini236]

Purpose of this PR

This PR updates the diskIOPSReadWrite and diskMBpsReadWrite properties under StorageProfile for UltraSSD disks:

• Removed @visibility(Lifecycle.Read) decorator to make the properties writable.
• Expanded the scope of usage from only VMSS to also include Virtual Machines and Flexible VMs, as these properties are now supported across all VM types.

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API Change Check

APIView identified API level changes in this PR and created the following API reviews

Language	API Review for Package
TypeSpec	Microsoft.Compute
Go	sdk/resourcemanager/compute/armcompute
Java	com.azure.resourcemanager:azure-resourcemanager-compute-generated
JavaScript	@azure/arm-compute
Swagger	Microsoft.Compute

[mikekistler]

Removing readonly from DiskIOPsReadWrite and DiskMBpsReadWrite looks like a benign change -- not breaking.

The base branch was changed.

[mikeharder]

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[yamini236]

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[yamini236]

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