Update current sources while reading late sources

Without this, a custom `ConfigSourceFactory` is not able to access
properties defined in files referenced in `smallrye.config.locations`.

Author: damianorenfer

implementation/src/main/java/io/smallrye/config/SmallRyeConfig.java

@@ -2007,6 +2007,12 @@ private static List<ConfigSourceWithPriority> mapLateSources(
                         countSourcesFromLocations = countSourcesFromLocations + configSources.size();
                     }
 
+                    List<ConfigSourceWithPriority> updatedCurrentSources = mapSources(profileContext.getConfigSources(),
+                            configSources);
+                    profileContext.getConfigSources().clear();
+                    profileContext.getConfigSources()
+                            .addAll(updatedCurrentSources.stream().map(ConfigSourceWithPriority::getSource).toList());
+
                     lateSources.addAll(configSources);
                 }
             }