Avoid using undefined extern "C" on windows

[jleibs]

This trick appears not to have worked on windows.

See: https://github.com/rerun-io/rerun/actions/runs/4406095342/jobs/7717895318

msvc\\lib\\rustlib\\etc\\libcore.natvis" "/NATVIS:C:\\Users\\runneradmin\\.rustup\\toolchains\\1.67-x86_64-pc-windows-msvc\\lib\\rustlib\\etc\\libstd.natvis"
  = note:    Creating library C:\a\rerun\rerun\target\x86_64-pc-windows-msvc\release\deps\re_viewer.dll.lib and object C:\a\rerun\rerun\target\x86_64-pc-windows-msvc\release\deps\re_viewer.dll.exp
          libre_log_types-c3e4ebfd91fc6bfd.rlib(re_log_types-c3e4ebfd91fc6bfd.re_log_types.67a257e1-cgu.6.rcgu.o) : error LNK2019: unresolved external symbol do_not_call_into_iter referenced in function _ZN135_$LT$$RF$re_log_types..component_types..arrow_convert_shims..BufferBinaryArray$u20$as$u20$core..iter..traits..collect..IntoIterator$GT$9into_iter17h35db1eaabf37072bE
          C:\a\rerun\rerun\target\x86_64-pc-windows-msvc\release\deps\re_viewer.dll : fatal error LNK1120: 1 unresolved externals

Instead use panic! as we have elsewhere.

Wheel-building results: https://github.com/rerun-io/rerun/actions/runs/4410197859

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