Prevent incomplete types to stop AOT processing

Previously, if a type to bind had a property whose type could not be
loaded, this would fail the whole build. This commit makes sure that
such failure does not stop AOT processing: rather we ignore the
incomplete type and carry on.

Closes gh-43598

spring-boot-project/spring-boot/src/main/java/org/springframework/boot/context/properties/bind/BindableRuntimeHintsRegistrar.java

@@ -29,6 +29,8 @@ import java.util.stream.StreamSupport;
 
 import kotlin.jvm.JvmClassMappingKt;
 import kotlin.reflect.KClass;
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
 
 import org.springframework.aot.hint.ExecutableMode;
 import org.springframework.aot.hint.MemberCategory;
@@ -59,6 +61,8 @@ import org.springframework.util.ReflectionUtils;
  */
 public class BindableRuntimeHintsRegistrar implements RuntimeHintsRegistrar {
 
+	private static final Log logger = LogFactory.getLog(BindableRuntimeHintsRegistrar.class);
+
 	private final Bindable<?>[] bindables;
 
 	/**
@@ -89,7 +93,12 @@ public class BindableRuntimeHintsRegistrar implements RuntimeHintsRegistrar {
 	 */
 	public void registerHints(RuntimeHints hints) {
 		for (Bindable<?> bindable : this.bindables) {
-			new Processor(bindable).process(hints.reflection());
+			try {
+				new Processor(bindable).process(hints.reflection());
+			}
+			catch (Exception ex) {
+				logger.debug("Skipping hints for " + bindable, ex);
+			}
 		}
 	}