fix: don't use forward-declared Ptr types in meta/

This would cause ODR violations when those headers were included in
other places that also included stuff like "Version.h" (note the
"meta/Version.h"), which can cause problems, especially in LTO.

Signed-off-by: flow <flowlnlnln@gmail.com>

launcher/ui/widgets/JavaSettingsWidget.h

@@ -60,7 +60,7 @@ public:
 protected slots:
     void memoryValueChanged(int);
     void javaPathEdited(const QString &path);
-    void javaVersionSelected(BaseVersionPtr version);
+    void javaVersionSelected(BaseVersion::Ptr version);
     void on_javaBrowseBtn_clicked();
     void on_javaStatusBtn_clicked();
     void checkFinished(JavaCheckResult result);