Tests: fix the two tests that fail on Windows

Windows CI stopped running tests (bdd3b2050) after these two failed:

- tst_reporttextafterinfo wrote "columns numbered from 1" to a .conf
  under XDG_CONFIG_HOME, which only Linux reads. On Windows the setting
  stayed in the registry, columns counted from 0 and the report read
  1-C8. The setting now goes to an INI file QET_SETTINGS_DIR points at
  (#1178), read on every system.
- tst_projectlock::readOnlyFolderDoesNotBlock relies on a read-only
  folder refusing new files. Windows ignores that flag on folders, so
  the lock was taken; the case is skipped there.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

tests/qttest/tst_projectlock.cpp

@@ -214,7 +214,9 @@ class tst_projectlock : public QObject
 
 		void readOnlyFolderDoesNotBlock()
 		{
-#ifndef Q_OS_WIN
+#ifdef Q_OS_WIN
+			QSKIP("a read-only folder still takes new files on Windows");
+#else
 			if (geteuid() == 0)
 				QSKIP("root can write anywhere");
 #endif