fix: Add typed CIDR placeholders for unresolved address prefixes - #3908

Possible null reference argument for parameter 'subscriptionId' in 'string ResourceHelper.CombineResourceId(string subscriptionId, string resourceGroup, string[] resourceType, string[] name, int depth = 2147483647)'.

Converting null literal or possible null value to non-nullable type.

Converting null literal or possible null value to non-nullable type.

Dereference of a possibly null reference.

Dereference of a possibly null reference.

The annotation for nullable reference types should only be used in code within a '#nullable' annotations context.

The annotation for nullable reference types should only be used in code within a '#nullable' annotations context.

The annotation for nullable reference types should only be used in code within a '#nullable' annotations context.

The annotation for nullable reference types should only be used in code within a '#nullable' annotations context.