[@azure-tools/azure-http-specs] backport cadl-ranch ARM test rename

[XiaofeiCao]

• origin: fix ARM scenario names cadl-ranch#714
• Fixed singleton mockapi.ts. Location is not updatable. Tested locally.

[azure-sdk]

No changes needing a change description found.

[azure-sdk]

You can try these changes here

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[XiaofeiCao]

@sarangan12 When doing backporting, I found that without handler, mockapi will check exact body equals:
com.azure.core.management.exception.ManagementException: Status code 400, "{"message":"Body provided doesn't match expected body","expected":{"identity":{"type":"SystemAssigned"}},"actual":{"location":"eastus","tags":{"tagKey1":"tagValue1"},"properties":{},"identity":{"type":"SystemAssigned"}}}" : Body provided doesn't match expected body

typespec-azure/packages/azure-http-specs/specs/azure/resource-manager/models/common-types/managed-identity/mockapi.ts

Lines 89 to 91 in 1505570

	body: {
	identity: createExpectedIdentity,
	},

Here we just want the request body to contain an expected identity property. Do you know how to achieve that?

[XiaofeiCao]

@sarangan12 My bad.. Seems there're some dependency issues on my local machine. Did a fresh install and build and everything works now!

[weidongxu-microsoft]

I think we can keep a few handlers, in the cases when we still need them (PATCH in ARM would be mixed behavior of normal PATCH and JSON-Merge-Patch). I assume this was what Sarangan did in cadl-ranch PR too.

(we can have follow up issue/PR to get rid of them, if we could find a way)

[XiaofeiCao]

Seems we need microsoft/typespec#4846 to be synced to submodule to fix the CI.