[windows][support] Improve backtrace emitted in crash report without llvm-symbolizer

Currently the backtrace emitted on windows when llvm-symbolizer is not
available includes addresses which cannot be easily decoded because
the addresses have the containing module's run-time base address added
into them, but we don't know what those base addresses are. This
change emits a module offset rather than an address.

There are a couple of related changes which were included as a result
of the review discussion for this patch:
- I have also removed the parameter printing as it adds noise to the
  dump and doesn't seem useful.
- I have added the exception code to the backtrace.

Differential Review: https://reviews.llvm.org/D127915