Fixes BF-47088 (full_bazel_compiledb on enterprise-windows).

SERVER-136567 added mongo_cc_fuzztest, deprecated fuzzers and bson_mutator to compile_commands.json under --config=compiledb on every platform. On Windows, validate_compile_commands replays those entries with MSVC, but FuzzTest/Centipede need a POSIX/Clang toolchain (endian.h, pthread.h, _builtin*, _PRETTY_FUNCTION_). That is 53 failed compilations since 10/20 (first bad commit 506fa21771).

• bazel/config/BUILD.bazel: new compiledb_fuzzers_enabled (compiledb AND not_windows), used by fsan_or_compiledb_enabled. Linux/macOS are unchanged; on Windows the fuzz targets are incompatible again, as before SERVER-136567.
• bazel/compiledb/compiledb_aspect_test.bzl: skip the three fuzztest compile-command analysis tests on Windows.