[arm-common-types]: Validation for subscriptionId and resourceGroupName are inconsistent.

[dolauli]

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Describe the change, Provide the desired TypeSpec or json-schema for the change as appropriate.

For typespec, they are https://github.com/Azure/typespec-azure/blob/main/packages/typespec-azure-resource-manager/lib/common-types/types.tsp#L503-L522

For swagger common types:
For examples, for v3, they are https://github.com/Azure/typespec-azure/blob/main/packages/typespec-azure-resource-manager/lib/common-types/types.tsp#L503-L522. For v5, they are https://github.com/Azure/typespec-azure/blob/main/packages/typespec-azure-resource-manager/lib/common-types/types.tsp#L503-L522.

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Checklist

• Follow our Code of Conduct
• Change is approved by Arm API Review
• Please update issue title and choose the change type.

[markcowl]

for resource group name, the pattern restrictions does not appear to exist in any version of the common-types, this may come from ARM documentation however, and pattern restrictions are now required for all resource names.

For subscriptionId, the restrictions are consistent with each version (using the @typeChangedFrom marking

[markcowl]

est: 3