[IOS]: Update Fabric Code Clarity

[admirsaheta]

Summary:

Improve the clarity, reliability, and maintainability of the RCTFabricSurface class in the codebase. By incorporating the suggested improvements, the pull request aims to address several existing issues and enhance the overall quality of the code.

Changelog:

• Improved consistency in naming conventions throughout the RCTFabricSurface class.
• Added comprehensive documentation comments for public APIs, including descriptions for parameters and return types.
• Implemented basic error handling mechanisms in critical methods such as start and stop to handle potential errors gracefully.
• Ensured proper synchronization for methods and properties accessed from different threads, enhancing thread safety.
• Marked deprecated methods with appropriate comments and provided guidance on using recommended alternatives.
• Verified and ensured proper memory management practices to prevent memory leaks and improve stability.
• Ensured consistent code formatting to enhance readability and maintainability.

Pick one each for the category and type tags:

[ANDROID|GENERAL|IOS|INTERNAL] [BREAKING|ADDED|CHANGED|DEPRECATED|REMOVED|FIXED|SECURITY] - [IOS][ADDED]

[github-actions[bot]]

	Warnings
:warning:	:clipboard: Missing Test Plan - Can you add a Test Plan? To do so, add a "## Test Plan" section to your PR description. A Test Plan lets us know how these changes were tested.

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