Replace Get-InstalledModule with Get-Module -ListAvailable (Azure#20632)

Author: msJinLei

tools/Az.Tools.Installer/Az.Tools.Installer.psm1

@@ -399,7 +399,7 @@ class ModuleInfo
 function Remove-AzureRM {
     process {
         try {
-            $azureModuleNames = (Get-InstalledModule -Name Azure* -ErrorAction Stop).Name | Where-Object {$_ -match "Azure(\.[a-zA-Z0-9]+)?" -or $_ -match "AzureRM(\.[a-zA-Z0-9]+)?"}
+            $azureModuleNames = (Microsoft.PowerShell.Core\Get-Module -ListAvailable -Name Azure* -ErrorAction Stop).Name | Where-Object {$_ -match "Azure(\.[a-zA-Z0-9]+)?" -or $_ -match "AzureRM(\.[a-zA-Z0-9]+)?"}
             foreach ($moduleName in $azureModuleNames) {
                 PowerShellGet\Uninstall-Module -Name $moduleName -AllVersion -AllowPrerelease -ErrorAction Continue
             }

tools/Az.Tools.Installer/ChangeLog.md

@@ -1,4 +1,5 @@
 ## Upcoming Release
+* Remove the usage of `Get-InstalledModule` from product codes.
 ## 0.2.1
 * Fixed the issue of installation and updating when Repository is not provided (#20209)
 * Updated telemetry assembly to 2.13.1