build: Revert "Temporarily disable compiling fuzz/utxo_snapshot.cpp with MSVC"

This reverts commit b2d5361002.

Also, adjust the doc to reflect the new minimum version. Versions 17.6
or 17.11 (or anything in between) may still work on a best-effor basis,
but it is not checked by CI or by developers.

src/test/fuzz/CMakeLists.txt

@@ -127,10 +127,7 @@ add_executable(fuzz
   txgraph.cpp
   txorphan.cpp
   txrequest.cpp
-  # Visual Studio 2022 version 17.12 introduced a bug
-  # that causes an internal compiler error.
-  # See: https://github.com/bitcoin/bitcoin/issues/31303
-  $<$<VERSION_LESS:${MSVC_VERSION},1942>:utxo_snapshot.cpp>
+  utxo_snapshot.cpp
   utxo_total_supply.cpp
   validation_load_mempool.cpp
   vecdeque.cpp