Replace ArmResourcePatchSync with ArmCustomPatchSync to fix JS SDK ge…

[GokulPrasad-Work]

Convert PATCH operations from ArmResourcePatchSync to ArmCustomPatchSync with explicit update models for AzureMonitorWorkspace and Issue resources. This resolves JS SDK generation failures caused by unsupported implicitOptionality in ArmResourcePatchSync.

ARM (Control Plane) API Specification Update Pull Request

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  • Converts PATCH operations from ArmResourcePatchSync to ArmCustomPatchSync with explicit update models for AzureMonitorWorkspace and Issue resources.

Why: The JS SDK generator does not support ArmResourcePatchSync (which uses implicitOptionality: true). ArmCustomPatchSync is the recommended template per ARM Resource Operations guidance and is consistent with other services (e.g., ActionGroups, DataCollection).

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[github-actions]

API Change Check

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

Language	API Review for Package
Swagger	Microsoft.Monitor-Accounts
TypeSpec	Microsoft.Monitor
Go	sdk/resourcemanager/monitor/armmonitor
Python	azure-mgmt-monitoraccounts
JavaScript	@azure/arm-monitoraccounts
Java	com.azure.resourcemanager:azure-resourcemanager-monitoraccounts

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