Method findLastOr

Sources/Shared/Containers/String.cpp:772–774

	}

	MutableStringView String::findLastOr(const StringView substring, char* const fail) {
		return MutableStringView{*this}.findLastOr(substring, fail);
	}

	StringView String::findLastOr(const StringView substring, const char* const fail) const {
		return StringView{*this}.findLastOr(substring, fail);