GH-8732 Don't remove JDBC message if other groups

Fixes #8732

When same message is added into different groups,
its record in the `INT_MESSAGE` must remain until the last group is removed

* Improve `JdbcMessageStore.DELETE_MESSAGES_FROM_GROUP` SQL
to ignore those messages for removal which has other group records in the `INT_GROUP_TO_MESSAGE` table

**Cherry-pick to `6.1.x`, `6.0.x` & `5.5.x`**

Author: artembilan

spring-integration-jdbc/src/main/java/org/springframework/integration/jdbc/store/JdbcMessageStore.java

@@ -199,7 +199,12 @@ SELECT COUNT(GROUP_KEY)
 
 		DELETE_MESSAGES_FROM_GROUP("""
 				DELETE from %PREFIX%MESSAGE
-				where MESSAGE_ID in (SELECT MESSAGE_ID from %PREFIX%GROUP_TO_MESSAGE where GROUP_KEY = ? and REGION = ?)
+				where MESSAGE_ID in (
+								SELECT MESSAGE_ID from %PREFIX%GROUP_TO_MESSAGE where GROUP_KEY = ? and REGION = ?
+												and MESSAGE_ID not in (
+																SELECT MESSAGE_ID from %PREFIX%GROUP_TO_MESSAGE
+																			where GROUP_KEY != ? and REGION = ?)
+								)
 					and REGION = ?
 				"""),
 
@@ -593,7 +598,8 @@ public void removeMessagesFromGroup(Object groupId, Collection<Message<?>> messa
 	public void removeMessageGroup(Object groupId) {
 		String groupKey = getKey(groupId);
 
-		this.jdbcTemplate.update(getQuery(Query.DELETE_MESSAGES_FROM_GROUP), groupKey, this.region, this.region);
+		this.jdbcTemplate.update(getQuery(Query.DELETE_MESSAGES_FROM_GROUP),
+				groupKey, this.region, groupKey, this.region, this.region);
 
 		if (logger.isDebugEnabled()) {
 			logger.debug("Removing relationships for the group with group key=" + groupKey);

spring-integration-jdbc/src/test/java/org/springframework/integration/jdbc/mysql/MySqlJdbcMessageStoreTests.java

@@ -497,6 +497,22 @@ public void testMessageGroupCondition() {
 		assertThat(this.messageStore.getMessageGroup(groupId).getCondition()).isEqualTo("testCondition");
 	}
 
+	@Test
+	public void sameMessageInTwoGroupsNotRemovedByFirstGroup() {
+		GenericMessage<String> testMessage = new GenericMessage<>("test data");
+
+		messageStore.addMessageToGroup("1", testMessage);
+		messageStore.addMessageToGroup("2", testMessage);
+
+		messageStore.removeMessageGroup("1");
+
+		assertThat(messageStore.getMessageCount()).isEqualTo(1);
+
+		messageStore.removeMessageGroup("2");
+
+		assertThat(messageStore.getMessageCount()).isEqualTo(0);
+	}
+
 	@Configuration
 	public static class Config {