changed int_max_str_digits from -1 to 4300 to be more cpython complient by JamesClarke7283 · Pull Request #5343 · RustPython/RustPython

A basic fix, which changes sys.flags.int_max_str_digits to 4300 instead of -1 so it behaves the same as the cpython implementation. Fixes #5139

PS: this is my first issue and I am new here, do let me know if I missed anything.