Exec py_test targets in a way that would work with --run_under=lldb

# 🚀 feature request

### Description

When you're debugging python targets that load python C extensions, it can be useful in general to run something like `lldb -- python3 -m pytest path/to/tests`. In bazel I would envision this as `bazel test --run_under=lldb :tests`, but this doesn't work currently since py_test execs a script with a shebang. I think in theory if py_test ran the equivalent of `python3 path/to/script` it could "just work" but I'm not sure.

### Describe alternatives you've considered

You can try to catch the process by launching the debugger elsewhere like `lldb --wait-for -n python3.11`, but this is a bit fragile since you could catch the wrong process

从 py_test 的执行路径开始，跟踪 `bazel test --run_under=lldb :tests` 如何调用生成的测试脚本。将当前基于 shebang 的执行方式与所要求的 `python3 path/to/script` 行为进行比较，然后验证 Python C-extension 测试是否能在 LLDB 下启动，同时普通的 py_test 执行保持不变。

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