Auto merge of #19178 - tigercosmos:python12, r=emilio

enhance android build debug info in `build_commands.py`

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I have some experience with building android.
Sometimes I forget  to set `ANDROID_NDK` or `ANDROID_SDK` when I create a new clean environment, and I would know only when build error message come out.(After very long time)
I think we could enhance the debug engineering at the beginning.

Also fix the previous work  #19109
I forgot to consider if `open()` crash(file not exist).

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- [X] `./mach build -d` does not report any errors
- [X] `./mach test-tidy` does not report any errors
- [X] These changes fix #19095 (github issue number if applicable).

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