chore: use manual invocation of npx yarn (#18902)

* chore: Revert "build: use yarn to install arm modules (#18802)"

This reverts commit 97bec607fe.
script/yarn.js doesn't exist in 5-0-x or 6-0-x

* chore: use manual invocation of npx yarn

vsts-arm-test-steps.yml

@@ -6,8 +6,8 @@ steps:
 
 - bash: |
     cd src/electron
-    node script/yarn.js install --frozen-lockfile
-  displayName: 'Yarn install'
+    npx yarn@1.15.2 install --frozen-lockfile --verbose
+  displayName: 'NPM install'
 
 - bash: |
     export ZIP_DEST=$PWD/src/out/Default
@@ -58,7 +58,7 @@ steps:
     cd src
     export npm_config_nodedir=$PWD/out/Default/gen/node_headers
     cd electron/spec
-    node ../script/yarn.js install --frozen-lockfile
+    npx yarn@1.15.2 install --frozen-lockfile --verbose
   displayName: Install test modules
 
 - bash: |