Remove horrible #define private public hack

This breaks with Qt 6. Instead, make the unit test a friend of the class
it needs access to.

templateparser/autotests/templateparserjobtest.cpp

@@ -6,14 +6,8 @@
 
 #include "templateparserjobtest.h"
 
-#ifndef _WIN32
-#define private public
-#endif
 #include "templateparserjob.h"
 #include "templateparserjob_p.h"
-#ifndef _WIN32
-#undef protected
-#endif
 #include <KIdentityManagement/Identity>
 #include <KIdentityManagement/IdentityManager>
 #include <MimeTreeParser/ObjectTreeParser>

templateparser/src/templateparserjob.h

@@ -355,6 +355,7 @@ private:
      */
     void makeValidHtml(QString &body);
 
+    friend class ::TemplateParserJobTest;
     std::unique_ptr<TemplateParserJobPrivate> d;
 };
 }