[3.14] Fix compiler warnings in remote debugging (#141060)

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Example of fixed warnings on 32-bit Windows:

Python\remote_debugging.c(24,53): warning C4244: 'function':
conversion from 'uint64_t' to 'uintptr_t', possible loss of data

Modules\_remote_debugging_module.c(789,44): warning C4244:
'function': conversion from 'uint64_t' to 'size_t', possible loss
of data

(cherry picked from commit f458ac0)

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Win32 built successsfully without warnings:

Build succeeded.
    0 Warning(s)
    0 Error(s)