GH-1683 - Return persisted status from JpaEventPublicationAdapter.getStatus().

Previously, the JPA adapter derived the status from `completionDate` alone, returning either COMPLETED or PUBLISHED. As a result, publications that were marked FAILED (or RESUBMITTED) by `markFailed` / `markResubmitted` — both of which already write the correct value into the `status` column — appear as PUBLISHED when read back through `getStatus()`.

Mirror the JdbcEventPublicationRepositoryV2 adapter: return the persisted `status` when set, falling back to the previous derivation (with PROCESSING as the default, matching the JPA entity's own constructor) when older rows have a null status column.

The added integration test demonstrates the bug — without the fix it returns PUBLISHED after `markFailed` — and clears the persistence context between the JPQL update and the re-read so the test loads a fresh entity.

Signed-off-by: BK202503 <199436087+BK202503@users.noreply.github.com>
Original pull request: GH-1714.

Author: BK202503

spring-modulith-events/spring-modulith-events-jpa/src/main/java/org/springframework/modulith/events/jpa/JpaEventPublicationRepository.java

@@ -617,7 +617,12 @@ public void markCompleted(Instant instant) {
 		 */
 		@Override
 		public Status getStatus() {
-			return publication.completionDate != null ? Status.COMPLETED : Status.PUBLISHED;
+
+			if (publication.status != null) {
+				return publication.status;
+			}
+
+			return publication.completionDate != null ? Status.COMPLETED : Status.PROCESSING;
 		}
 
 		/*

spring-modulith-events/spring-modulith-events-jpa/src/test/java/org/springframework/modulith/events/jpa/JpaEventPublicationRepositoryIntegrationTests.java

@@ -448,6 +448,26 @@ void looksUpFailedPublicationWithReferenceDate() throws Exception {
 					.containsExactly(publication.getIdentifier());
 		}
 
+		@Test // GH-1683
+		void exposesPersistedStatusOnReload() {
+
+			var event = new TestEvent("first");
+			var publication = createPublication(event);
+
+			repository.markFailed(publication.getIdentifier());
+
+			// markFailed issues a JPQL update; clear the persistence context so the
+			// next query loads a fresh entity from the database rather than the
+			// cached, stale version.
+			em.flush();
+			em.clear();
+
+			var reloaded = repository.findFailedPublications(FailedCriteria.ALL.withItemsToRead(10));
+
+			assertThat(reloaded).hasSize(1);
+			assertThat(reloaded.get(0).getStatus()).isEqualTo(Status.FAILED);
+		}
+
 		private List<JpaEventPublication> getIncompletePublications() {
 			return em.createQuery("select p from DefaultJpaEventPublication p", JpaEventPublication.class).getResultList();
 		}