Add React End to End test

[Sharmaz]

Description

Add an end-to-end (E2E) test for the React template.
This will ensure the CLI can correctly scaffold a React project and that the generated project behaves as expected.

You can follow the official contribution guide here:
How to add a new end-to-end test for templates

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Acceptance Criteria

• The test should verify that the React template appears in the CLI options.
• The test should generate a project using the React template.
• The generated project should run successfully and render the expected initial view (including styles and enchilada-js-logo.svg).
• The test should pass in CI.

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Notes

• Look at existing E2E tests for other templates as a reference.
• Keep the test minimal but robust.
• Consistency across template tests is important (e.g. naming, assertions).