Fix escaping arguments for PowerShell tasks (#13918) ***NO_CI***

## Description

Fixing error blocking PRs due to surprise ADO policy change:

```
Detected characters in arguments that may not be executed correctly by the shell. Please escape special characters using backtick (`). More information is available here: https://aka.ms/ado/75787
```

### Type of Change
_Erase all that don't apply._
- Bug fix (non-breaking change which fixes an issue)

### Why
Unblock pipelines.

### What
Fixed argument escaping.

## Screenshots
N/A

## Testing
N/A

## Changelog
Should this change be included in the release notes: _no_

.ado/jobs/playground.yml

@@ -160,12 +160,9 @@ jobs:
                     New-Item -Path '$(Build.StagingDirectory)\DebugTestCrashDumps' -ItemType Directory
                 displayName: Set CrashDumpRootPath
 
-              - task: PowerShell@2
+              - powershell: |
+                  & $(Build.SourcesDirectory)\.ado\scripts\RunProcDump.ps1 -ProcDumpArgs @("-mm", "-i", "$(CrashDumpRootPath)") -ProcDumpInstallPath "$(ProcDumpPath)" -Verbose
                 displayName: Setup ProcDump as AeDebug
-                inputs:
-                  targetType: filePath # filePath | inline
-                  filePath: $(Build.SourcesDirectory)\.ado\scripts\RunProcDump.ps1
-                  arguments: "-ProcDumpArgs @('-mm', '-i', '$(CrashDumpRootPath)') -ProcDumpInstallPath '$(ProcDumpPath)' -Verbose"
 
               # This step loose-file-deploys the UWP Playground app and uses it as an RNW host for a series
               # of debug feature tests. In the future, these tests should be performed against a host app

.ado/templates/prepare-build-env.yml

@@ -55,9 +55,7 @@ steps:
         Write-Host "##vso[task.setvariable variable=ProcDumpPath]$(Build.StagingDirectory)\Procdump"
     displayName: Set ProcDumpPath
 
-  - task: PowerShell@2
+  - powershell: |
+      & $(Build.SourcesDirectory)\.ado\scripts\RunProcDump.ps1 -ProcDumpArgs @("-mm", "-i", "$(CrashDumpRootPath)") -ProcDumpInstallPath "$(ProcDumpPath)" -Verbose
     displayName: Setup ProcDump as AeDebug
-    inputs:
-      targetType: filePath # filePath | inline
-      filePath: $(Build.SourcesDirectory)\.ado\scripts\RunProcDump.ps1
-      arguments: "-ProcDumpArgs @('-mm', '-i', '$(CrashDumpRootPath)') -ProcDumpInstallPath '$(ProcDumpPath)' -Verbose"
+