Fix MemorySnapshotSanitized for 32-bit builds, where size_t ≠ VMAddress

By explicitly requesting the desired specialization of std::min, this
fixes a compile-time error encountered with 526fd4a0352b at
https://ci.chromium.org/ui/p/chromium/builders/try/android-binary-size/2851684/
→ 33. compile → stdout:

../../third_party/crashpad/crashpad/snapshot/sanitized/memory_snapshot_sanitized.cc:60:35: error: no matching function for call to 'min'
   60 |     const size_t aligned_offset = std::min(
      |                                   ^~~~~~~~
../../third_party/libc++/src/include/__algorithm/min.h:35:1: note: candidate template ignored: deduced conflicting types for parameter '_Tp' ('size_t' (aka 'unsigned int') vs. 'VMAddress' (aka 'unsigned long long'))
   35 | min(_LIBCPP_LIFETIMEBOUND const _Tp& __a, _LIBCPP_LIFETIMEBOUND const _Tp& __b) {
      | ^
../../third_party/libc++/src/include/__algorithm/min.h:43:1: note: candidate template ignored: could not match 'initializer_list<_Tp>' against 'size_t' (aka 'unsigned int')
   43 | min(initializer_list<_Tp> __t, _Compare __comp) {
      | ^
../../third_party/libc++/src/include/__algorithm/min.h:48:82: note: candidate function template not viable: requires single argument '__t', but 2 arguments were provided
   48 | [[__nodiscard__]] inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 _Tp min(initializer_list<_Tp> __t) {
      |                                                                                  ^   ~~~~~~~~~~~~~~~~~~~~~~~~~
../../third_party/libc++/src/include/__algorithm/min.h:29:1: note: candidate function template not viable: requires 3 arguments, but 2 were provided
   29 | min(_LIBCPP_LIFETIMEBOUND const _Tp& __a, _LIBCPP_LIFETIMEBOUND const _Tp& __b, _Compare __comp) {
      | ^                         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Bug: 500097298
Change-Id: I782169d71c020cd52c5d4a7c1312364487e44904
Reviewed-on: https://chromium-review.googlesource.com/c/crashpad/crashpad/+/8164800
Reviewed-by: Joshua Peraza <jperaza@chromium.org>
Commit-Queue: Mark Mentovai <mark@chromium.org>