Fix race condition on first time uses of Er'cana/Ahnonay books.

Some of the Python code expects for explicit Age initialization to
complete immediately. Rewriting that would be something of a chore, so
this will prevent first time clicks on the Er'cana and Ahnoying
Cathedral books from causing a perma-stick.

Homologue of H'uru commit ec0aecd202

Sources/Plasma/FeatureLib/pfPython/pyVault.cpp

@@ -556,7 +556,7 @@ void pyVault::RegisterMTStation( const char * stationName, const char * backLink
 
 void pyVault::RegisterOwnedAge( const pyAgeLinkStruct & link )
 {
-	VaultRegisterOwnedAge(link.GetAgeLink());
+	VaultRegisterOwnedAgeAndWait(link.GetAgeLink());
 }
 
 void pyVault::UnRegisterOwnedAge( const char * ageFilename )