Remove hard dependency on inject aop

blackbox-test/src/main/java/module-info.java

@@ -1,6 +1,7 @@
 @io.avaje.inject.InjectModule(name="GeneratedModule")
 module blackbox.test {
 
+  requires io.avaje.inject.aop;
   requires io.avaje.validation.http;
   requires io.avaje.validation.contraints;
   requires jakarta.validation;

validator-inject-plugin/src/main/java/io/avaje/validation/inject/spi/DefaultValidatorProvider.java

@@ -19,20 +19,33 @@
 /** Plugin for avaje inject that provides a default Validator instance. */
 public final class DefaultValidatorProvider implements InjectPlugin {
 
+  private static final boolean WIRE_ASPECTS = aspectsOnClasspath();
+
+  private static boolean aspectsOnClasspath() {
+    try {
+      Class.forName("io.avaje.inject.aop.Aspect");
+      return true;
+    } catch (ClassNotFoundException e) {
+      return false;
+    }
+  }
+
   @Override
   public Class<?>[] provides() {
     return new Class<?>[] {Validator.class};
   }
 
   @Override
   public Class<?>[] providesAspects() {
-    return new Class<?>[] {ValidMethod.class};
+    return WIRE_ASPECTS ? new Class<?>[] {ValidMethod.class} : new Class<?>[] {};
   }
 
   @Override
   public void apply(BeanScopeBuilder builder) {
     validator(builder);
-    paramAspect(builder);
+    if (WIRE_ASPECTS) {
+      paramAspect(builder);
+    }
   }
 
   private void validator(BeanScopeBuilder builder) {

validator-inject-plugin/src/main/java/module-info.java

@@ -2,7 +2,7 @@
 
   requires transitive io.avaje.validation;
   requires transitive io.avaje.inject;
-  requires transitive io.avaje.inject.aop;
+  requires io.avaje.inject.aop;
 
   provides io.avaje.inject.spi.InjectExtension with io.avaje.validation.inject.spi.DefaultValidatorProvider;
 }