Make the build time defaults a higher priority

This means that if you set a value using a system property when building
the application it will now override the application.properties that is
packaged in the application (but not an external application.properties
on the file system).

Otherwise the behaviour is very confusing, with build time config values
only taking effect if they are not overriding a property in
application.properties.

Relates to (but does not fully fix) quarkusio#19438

core/deployment/src/main/java/io/quarkus/deployment/configuration/RunTimeConfigurationGenerator.java

@@ -382,8 +382,10 @@ public static final class GenerateOperation implements AutoCloseable {
             // the build time config source field, to feed into the run time config
             cc.getFieldCreator(C_BUILD_TIME_CONFIG_SOURCE)
                     .setModifiers(Opcodes.ACC_PUBLIC | Opcodes.ACC_STATIC | Opcodes.ACC_FINAL);
+            //in-app application.yaml is 255, file-system application.properties is 260, this needs to be between them
+            //really it could be higher to stop build time config being overridden, but then the warning would not work
             final ResultHandle buildTimeConfigSource = clinit.newInstance(PCS_NEW, buildTimeValues,
-                    clinit.load("Build time config"), clinit.load(100));
+                    clinit.load("Build time config"), clinit.load(256));
             clinit.writeStaticField(C_BUILD_TIME_CONFIG_SOURCE, buildTimeConfigSource);
 
             // the build time run time visible default values config source
@@ -567,7 +569,7 @@ public void run() {
                 }
             }
             final ResultHandle specifiedRunTimeSource = clinit.newInstance(PCS_NEW, specifiedRunTimeValues,
-                    clinit.load("Specified default values"), clinit.load(Integer.MIN_VALUE + 100));
+                    clinit.load("Specified default values"), clinit.load(256)); //in-app application.yaml is 255, file-system application.properties is 260, this needs to be between them
             cc.getFieldCreator(C_SPECIFIED_RUN_TIME_CONFIG_SOURCE)
                     .setModifiers(Opcodes.ACC_STATIC | (devMode ? Opcodes.ACC_VOLATILE : Opcodes.ACC_FINAL));
             clinit.writeStaticField(C_SPECIFIED_RUN_TIME_CONFIG_SOURCE, specifiedRunTimeSource);