CI: Tests are not run on pull requests (#618)

* Update CI pipeline

* Fix compilation problem

Author: guillermocalvo

.github/workflows/gradle.yml

@@ -21,7 +21,6 @@ jobs:
           distribution: 'adopt'
           java-version: '11'
       - name: Run Build
-        if: github.event_name == 'push'
         id: build
         uses: gradle/gradle-build-action@v2
         env:

grails-datastore-gorm-neo4j/src/main/groovy/org/grails/datastore/gorm/neo4j/engine/Neo4jAssociationQueryExecutor.groovy

@@ -55,7 +55,7 @@ class Neo4jAssociationQueryExecutor implements AssociationQueryExecutor<Serializ
     final boolean lazy
     final boolean singleResult
 
-    Neo4jAssociationQueryExecutor(Neo4jSession session, Association association, boolean lazy = association.mapping.mappedForm.isLazy(), boolean singleResult = false) {
+    Neo4jAssociationQueryExecutor(Neo4jSession session, Association association, boolean lazy = (association.mapping.mappedForm as Property).isLazy(), boolean singleResult = false) {
         this.session = session
         PersistentEntity associatedEntity = association.associatedEntity
         if(associatedEntity != null) {