Update test command in convert script for improved execution

- Modified the test command in the convert script to simplify the execution process by removing unnecessary path references.
- Ensured compatibility with the new test structure by updating the command to reflect the current organization.

These changes enhance the clarity and efficiency of the testing setup in the project.

Author: AbanoubGhadban

script/convert

@@ -40,8 +40,8 @@ gsub_file_content("../spec/dummy/package.json", /"react": "[^"]*",/, '"react": "
 gsub_file_content("../spec/dummy/package.json", /"react-dom": "[^"]*",/, '"react-dom": "18.0.0",')
 gsub_file_content(
   "../packages/react-on-rails/package.json",
-  "cd ../.. && jest packages/react-on-rails/tests",
-  'cd ../.. && jest packages/react-on-rails/tests --testPathIgnorePatterns=\".*(RSC|stream|' \
+  "jest tests",
+  'jest tests --testPathIgnorePatterns=\".*(RSC|stream|' \
   'registerServerComponent|serverRenderReactComponent|SuspenseHydration).*\"'
 )
 # Keep modern JSX transform for React 18+