Method decreaseIndent

tools/reflect/include/CppEmitter.h:47–50

    void addWithIndent(std::string&& code) { hpp << indent(currentIndent) << code; }
    void increaseIndent() { currentIndent++; }
    void decreaseIndent() {
        SLANG_ASSERT(currentIndent != 0);
        currentIndent--;
    }

    std::string emit() const {
        auto includesTransform = std::views::transform(includes, [](const auto& inc) {