/**
 * Extract the last boxed{…} string from a LaTeX-like answer.
 *
 * This function searches for the last occurrence of a LaTeX-like `boxed{...}` pattern in the input text and extracts the content within the braces. It handles nested braces appropriately.
 *
 * Args:
 *     text (str): The input string containing LaTeX-like `boxed{...}` patterns.
 *
 * Returns:
 *     str: The content of the last `boxed{...}` pattern found in the text. Returns an empty string if no such pattern is found.
 *
 * The function processes the text by splitting it on `boxed{` and then iterating through the resulting pieces. For each piece, it counts the balance of braces to correctly identify the end of the boxed content.
 *
 * Examples:
 *     >>> extract_boxed_answer('boxed{answer}')
 *     'answer'
 *     >>> extract_boxed_answer('boxed{answer}% comment')
 *     'answer'
 *     >>> extract_boxed_answer('boxed{answer} more text boxed{another answer}')
 *     'another answer'
 *     >>> extract_boxed_answer('boxed{answer{with{nested}braces}}')
 *     'answer{with{nested}braces}'
 */