scripted-diff: modernize outdated trait patterns - types

The use of e.g. `std::underlying_type_t<T>` replaces the older `typename std::underlying_type<T>::type`.
The `_t` helper alias template (such as `std::underlying_type_t<T>`) introduced in C++14 offers a cleaner and more concise way to extract the type directly.
See https://en.cppreference.com/w/cpp/types/underlying_type for details.

-BEGIN VERIFY SCRIPT-
sed -i -E 's/(typename )?(std::[a-z_]+)(<[^<>]+>)::type\b/\2_t\3/g' $(git grep -l '::type' ./src ':(exclude)src/bench/nanobench.h' ':(exclude)src/leveldb' ':(exclude)src/minisketch' ':(exclude)src/span.h' ':(exclude)src/sync.h')
-END VERIFY SCRIPT-

src/test/fuzz/util.h

@@ -134,7 +134,7 @@ template <typename WeakEnumType, size_t size>
 {
     return fuzzed_data_provider.ConsumeBool() ?
                fuzzed_data_provider.PickValueInArray<WeakEnumType>(all_types) :
-               WeakEnumType(fuzzed_data_provider.ConsumeIntegral<typename std::underlying_type<WeakEnumType>::type>());
+               WeakEnumType(fuzzed_data_provider.ConsumeIntegral<std::underlying_type_t<WeakEnumType>>());
 }
 
 [[nodiscard]] inline opcodetype ConsumeOpcodeType(FuzzedDataProvider& fuzzed_data_provider) noexcept