[TypeSpec CI] Pass "--no" to ensure npx does not install anything (#24345)

Author: mikeharder

eng/pipelines/templates/steps/typespec-ci.yml

@@ -12,9 +12,13 @@ steps:
     exit_code=0
 
     pushd ${{parameters.Folder}}
-    npx tsp compile . --warn-as-error || exit_code=1
+
+    # Pass "--no" to ensure npx does not install anything (TypeSpec compiler should already be installed)
+    npx --no tsp compile . --warn-as-error || exit_code=1
+
     # Format parent folder to include shared files (disabled until formatting diffs are fixed)
     # npx tsp format ../**/*.tsp
+
     popd
 
     # If any files are added, changed, or deleted, print diff and return error

eng/pipelines/typespec-ci.yml

@@ -27,6 +27,7 @@ jobs:
 
   - script: npm ls -a
     displayName: npm ls -a
+    condition: succeededOrFailed()
 
   - template: templates/steps/typespec-ci.yml
     parameters: