feat(react): Add Feature Flag Component

[marcozabel]

This PR

This PR addresses open issues from the following PR: #1164

Related Issues

#1164

[gemini-code-assist]

Summary of Changes

Hello @marcozabel, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request refines the FeatureFlag component within the React SDK by introducing a more robust value comparison mechanism and clarifying its rendering logic. It specifically addresses how the component behaves when evaluating non-boolean feature flags without an explicit match condition, ensuring more predictable and correct conditional rendering.

Highlights

• Enhanced Value Comparison: The FeatureFlag component now utilizes a dedicated isEqual utility for comparing flag values, ensuring more accurate and robust checks across different data types.
• Refined Rendering Logic for Non-Boolean Flags: The component's rendering behavior has been updated to explicitly prevent non-boolean flags from rendering by default if no match prop is provided, leading to more predictable conditional rendering.
• New Test Coverage: A new test case has been added to validate the updated rendering behavior for non-boolean flags when no match prop is supplied, confirming the intended functionality.

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[gemini-code-assist]

Code Review

This pull request refactors the FeatureFlag component to improve its behavior. The key changes include using a deep equality check (isEqual) for the match prop, making comparisons more robust for object and array flag values. Additionally, the logic for rendering children without a match prop has been corrected to only consider the truthiness of boolean flags, preventing non-boolean flags from being rendered implicitly. A new test case has been added to verify this corrected behavior. My review includes a minor suggestion to improve code style in the new test.