Panic in `StructFields::from_fields()` on malformed file: length mismatch between names and dtypes

[lorenzhs]

What happened?

More fuzzing, again in struct types: if the number of field names and dtypes doesn't match, StructFields::from_fields panics. StructFields::from_fb decodes them independently and passes them to StructFields::from_fields which is infallible.

thread 'main' (2155192) panicked at vortex-array/src/dtype/struct_.rs:325:13:
Other error: length mismatch between names (0) and dtypes (3)
Backtrace:
   0: vortex_array::dtype::struct_::StructFields::from_fields
   1: vortex_array::dtype::serde::flatbuffers::<impl core::convert::TryFrom<vortex_array::dtype::serde::flatbuffers::ViewedDType> for vortex_array::dtype::DType>::try_from
   2: vortex_array::dtype::serde::flatbuffers::<impl vortex_array::dtype::DType>::from_flatbuffer
   3: vortex_file::footer::deserializer::FooterDeserializer::deserialize
   4: vortex_file::open::VortexOpenOptions::open::{{closure}}
   5: vortex_file::open::VortexOpenOptions::open_path::{{closure}}
   6: vortex_tui::inspect::VortexInspector::read_footer::{{closure}}
   7: vortex_tui::inspect::exec_inspect::{{closure}}
   8: vortex_tui::native_cli::launch_from::{{closure}}
   9: vx::main::{{closure}}
  10: vx::main
  11: std::sys::backtrace::__rust_begin_short_backtrace
  12: std::rt::lang_start::{{closure}}
  13: std::rt::lang_start_internal
  14: main
  15: __libc_start_call_main
             at ./csu/../sysdeps/nptl/libc_start_call_main.h:58:16
  16: __libc_start_main_impl
             at ./csu/../csu/libc-start.c:360:3
  17: _start

Steps to reproduce

https://4z2.de/fuzz_dtype_2.vortex sha256sum: 6ce37d27ecd1642ea12d9b0211b5643c12b848b68ff2969ded65e0a79d9933d9

Environment

develop as of c5e075ab7f9babffd32f9592e8e35a1981c5cd49. vx inspect does the trick

Additional context

No response