fix(powershell): pass args verbatim to npm/npx

Fixes #7375

Author: lukekarrys

bin/npm.ps1

@@ -24,9 +24,9 @@ if (Test-Path $NPM_PREFIX_NPM_CLI_JS) {
 
 # Support pipeline input
 if ($MyInvocation.ExpectingInput) {
-  $input | & $NODE_EXE $NPM_CLI_JS $args
+  $input | & $NODE_EXE $NPM_CLI_JS -- $args
 } else {
-  & $NODE_EXE $NPM_CLI_JS $args
+  & $NODE_EXE $NPM_CLI_JS -- $args
 }
 
 exit $LASTEXITCODE

bin/npx.ps1

@@ -24,9 +24,9 @@ if (Test-Path $NPM_PREFIX_NPX_CLI_JS) {
 
 # Support pipeline input
 if ($MyInvocation.ExpectingInput) {
-  $input | & $NODE_EXE $NPX_CLI_JS $args
+  $input | & $NODE_EXE $NPX_CLI_JS -- $args
 } else {
-  & $NODE_EXE $NPX_CLI_JS $args
+  & $NODE_EXE $NPX_CLI_JS -- $args
 }
 
 exit $LASTEXITCODE