Description of the change

This PR completes the test infrastructure modernization by removing 12 additional unused devDependencies. This reduces the project's dependency footprint by 37 packages total (274 packages removed from node_modules), when counting both Karma and Grunt dev dependencies.

Each removed dependency and its previous purpose:

• babel-eslint: Legacy ESLint parser, superseded by @babel/eslint-parser already in use
• coverage-istanbul-loader: Webpack loader for code coverage, was only used by Karma
• jade: Template engine, only referenced in server error parsing for legacy jade template
  errors
• jasmine-core: Jasmine test framework, project uses Mocha/Chai instead
• natives: Node.js native module list, no usage found in codebase
• requirejs: AMD module loader, only used in one Karma test that's been migrated
• script-loader: Webpack loader for legacy scripts, was only configured in Karma
• @types/glob: TypeScript types for glob, not needed without TypeScript
• bluebird: Promise library, project uses native Promises
• chalk: Terminal string styling, not used in our scripts
• jquery-mockjax: jQuery AJAX mocking, tests use Sinon instead
• stackframe: Stack trace parsing, project uses error-stack-parser instead

Verification

• ✅ All browser tests pass with Web Test Runner
• ✅ All server tests pass with Mocha
• ✅ Build process works without Grunt
• ✅ All distribution files generated correctly

Related issues

SDK-493/replace-karma-with-webtest-runner-for-modern-performant-browser