[js/web] fix karma launch with chrome headless (#8998)

Author: fs-eire

js/web/karma.conf.js

@@ -77,7 +77,7 @@ module.exports = function (config) {
     browserSocketTimeout: 60000,
     hostname: getMachineIpAddress(),
     customLaunchers: {
-      ChromeTest: { base: 'Chrome', flags: ['--window-size=1,1', '--enable-features=SharedArrayBuffer'] },
+      ChromeTest: { base: 'ChromeHeadless', flags: ['--window-size=1,1', '--enable-features=SharedArrayBuffer'] },
       ChromeDebug: { debug: true, base: 'Chrome', flags: ['--remote-debugging-port=9333', '--enable-features=SharedArrayBuffer'] },
 
       //

tools/ci_build/github/azure-pipelines/win-wasm-ci-pipeline.yml

@@ -219,7 +219,7 @@ jobs:
     workingDirectory: '$(Build.SourcesDirectory)\js\web'
     displayName: 'Run ort-web tests - unpacked mode'
   - script: |
-     npm test --  --webgl-texture-pack-mode -b=webgl
+     npm test -- --webgl-texture-pack-mode -b=webgl
     workingDirectory: '$(Build.SourcesDirectory)\js\web'
     displayName: 'Run ort-web tests - packed mode'
   - script: |