fix: babylonian_method algorithm bug with wrong comparison

[thenamehasbeentake]

Description of Change

fix: the end condition of the babylonian_method and add testcase 3. The double type precision problem causes the original test cases to be inaccurate.

Checklist

• [x] Added description of change
• [ ] Added file name matches File name guidelines
• [x] Added tests and example, test must pass
• [ ] Added documentation so that the program is self-explanatory and educational - Doxygen guidelines
• [ ] Relevant documentation/comments is changed or added
• [x] PR title follows semantic commit guidelines
• [ ] Search previous suggestions before making a new one, as yours may be a duplicate.
• [ ] I acknowledge that all my contributions will be made under the project's license.

Notes:

[github-actions[bot]]

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[github-actions[bot]]

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