Fix ApplicationListenerMethodAdapter#supportsEventType check

This commit fixes the check by avoiding a fallback to eventType's
hasUnresolvableGenerics(). This could previously lead to checking a
generic event type `A<T>` against a listener which accepts unrelated
`B` and return `true` despite the inconsistency.

Note that this wouldn't necessarily surface to the user because there is
a `catch (ClassCastException e)` down the line, which was primarily put
in place to deal with lambda-based listeners but happens to catch an
exception thrown due to the bad result of `supportsEventType`.

The `supportsEventType` now matches generic `PayloadApplicationEvent`
types with a raw counterpart, using the above fallback only in that case
and otherwise ultimately returning `false`.

Closes gh-30399

spring-context/src/main/java/org/springframework/context/event/ApplicationListenerMethodAdapter.java

@@ -173,12 +173,12 @@ public class ApplicationListenerMethodAdapter implements GenericApplicationListe
 			}
 			if (PayloadApplicationEvent.class.isAssignableFrom(eventType.toClass())) {
 				ResolvableType payloadType = eventType.as(PayloadApplicationEvent.class).getGeneric();
-				if (declaredEventType.isAssignableFrom(payloadType)) {
+				if (declaredEventType.isAssignableFrom(payloadType) || eventType.hasUnresolvableGenerics()) {
 					return true;
 				}
 			}
 		}
-		return eventType.hasUnresolvableGenerics();
+		return false;
 	}
 
 	@Override