HHH-17823 Add FK to identifier in HQL parser

hibernate-core/src/main/antlr/org/hibernate/grammars/hql/HqlParser.g4

@@ -1655,6 +1655,7 @@ rollup
 	| FETCH
 	| FILTER
 	| FIRST
+	| FK
 	| FOLLOWING
 	| FOR
 	| FORMAT

hibernate-core/src/test/java/org/hibernate/orm/test/hql/SelectWithFkInPackageTest.java

@@ -0,0 +1,110 @@
+/*
+ * Hibernate, Relational Persistence for Idiomatic Java
+ *
+ * License: GNU Lesser General Public License (LGPL), version 2.1 or later.
+ * See the lgpl.txt file in the root directory or <http://www.gnu.org/licenses/lgpl-2.1.html>.
+ */
+package org.hibernate.orm.test.hql;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+import java.util.List;
+
+import org.hibernate.testing.orm.junit.EntityManagerFactoryScope;
+import org.hibernate.testing.orm.junit.Jpa;
+
+import org.junit.jupiter.api.AfterAll;
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+import jakarta.persistence.Column;
+import jakarta.persistence.Entity;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.Id;
+import jakarta.persistence.Table;
+
+@Jpa(
+		annotatedClasses = {
+				SelectWithFkInPackageTest.Person.class,
+				SelectWithFkInPackageTest.Book.class
+		}
+)
+class SelectWithFkInPackageTest {
+
+	@BeforeAll
+	void init(EntityManagerFactoryScope scope) {
+		scope.inTransaction( entityManager -> {
+			entityManager.persist( new Person( "name" ) );
+			entityManager.persist( new Book( "title" ) );
+		} );
+	}
+
+	@AfterAll
+	void tearDown(EntityManagerFactoryScope scope) throws Exception {
+		scope.inTransaction( entityManager -> {
+			entityManager.createQuery( "delete from org.fk.entity.Person" );
+			entityManager.createQuery( "delete from org.right.entity.Book" );
+		} );
+	}
+
+	@Test
+	void selectWithFk(EntityManagerFactoryScope scope) {
+		scope.inTransaction( entityManager -> {
+			List<Person> people = entityManager.createQuery( "from org.fk.entity.Person", Person.class )
+					.getResultList();
+
+			assertThat( people ).hasSize( 1 );
+		} );
+	}
+
+	@Test
+	void selectNoFk(EntityManagerFactoryScope scope) {
+		scope.inTransaction( entityManager -> {
+			List<Book> books = entityManager.createQuery( "from org.right.entity.Book", Book.class )
+					.getResultList();
+
+			assertThat( books ).hasSize( 1 );
+		} );
+	}
+
+	@Entity(name = "org.fk.entity.Person")
+	@Table(name = "person")
+	public static class Person {
+
+		@Id
+		@GeneratedValue
+		public Long id;
+
+		@Column
+		public String name;
+
+		public Person() {
+		}
+
+		public Person(String name) {
+			this.name = name;
+		}
+	}
+
+	@Entity(name = "org.right.entity.Book")
+	@Table(name = "book")
+	public static class Book {
+
+		@Id
+		@GeneratedValue
+		public Long id;
+
+		@Column
+		public String title;
+
+		public Book() {
+		}
+
+		public Book(String title) {
+			this.title = title;
+		}
+	}
+
+}