message: Actually only override the PUBLIC ABI, not the private one
diff: @@ -611,15 +611,6 @@ namespace vcpkg::Build
  const PreBuildInfo& pre_build_info,
  Span<const AbiEntry> dependency_abis)
  {
  - if (pre_build_info.public_abi_override)
  - {
  - return AbiTagAndFile
  - {
  - "override",
  - pre_build_info.public_abi_override.value_or_exit(VCPKG_LINE_INFO)
  - };
  - }
  -
  auto& fs = paths.get_filesystem();
  const Triplet& triplet = config.triplet;
  const std::string& name = config.scf.core_paragraph->name;
  @@ -823,7 +814,7 @@ namespace vcpkg::Build
  paths,
  pre_build_info,
  spec,
  - AbiTagAndFile{}.tag,
  + pre_build_info.public_abi_override.value_or(AbiTagAndFile{}.tag),
  config);
  }
  @@ -883,7 +874,7 @@ namespace vcpkg::Build
  paths,
  pre_build_info,
  spec,
  - maybe_abi_tag_and_file.value_or_exit(VCPKG_LINE_INFO).tag,
  + pre_build_info.public_abi_override.value_or(abi_tag_and_file->tag),
  config);
  if (config.build_package_options.binary_caching == BinaryCaching::YES &&
  @@ -1129,8 +1120,7 @@ namespace vcpkg::Build
  pre_build_info.passthrough_env_vars = Strings::split(variable_value, ";");
  break;
  case VcpkgTripletVar::PUBLIC_ABI_OVERRIDE :
  - pre_build_info.public_abi_override =
  - variable_value.empty() ? nullopt : Optional<std::string>{variable_value};
  + pre_build_info.public_abi_override = variable_value;
  break;
  }
  }
  