[Breaking Change] ContainerInstance: Removing the default value of OsType Parameter (#26850)

* breaking change, removing the default value of ostype parameter

* Updated the release versions

Author: drishtipeshwani09

src/ContainerInstance/ContainerInstance.Autorest/README.md

@@ -116,6 +116,16 @@ directive:
       verb: Invoke
       subject: Command
     hide: true
+  # Breaking change for OSType parameter
+  - where:
+      parameter-name: OSType
+    set:
+      breaking-change:
+        become-mandatory: false
+        change-description: Removing the default value of OSType parameter.
+        deprecated-by-version: 5.0.0
+        deprecated-by-azversion: 14.0.0
+        change-effective-date: 2025/05/21
   # Alias long name: Get-AzContainerInstanceContainerGroupOutboundNetworkDependencyEndpoint
   - where:
       verb: Get

src/ContainerInstance/ContainerInstance.Autorest/custom/New-AzContainerGroup.ps1

@@ -59,6 +59,7 @@ param(
     [ArgumentCompleter([Microsoft.Azure.PowerShell.Cmdlets.ContainerInstance.Support.OperatingSystemTypes])]
     [Microsoft.Azure.PowerShell.Cmdlets.ContainerInstance.Category('Body')]
     [Microsoft.Azure.PowerShell.Cmdlets.ContainerInstance.Support.OperatingSystemTypes]
+    [Microsoft.Azure.PowerShell.Cmdlets.ContainerInstance.Runtime.ParameterBreakingChangeAttribute("OSType", "14.0.0", "5.0.0", "2025/05/21")]
     # The operating system type required by the containers in the container group.
     ${OSType},