DATAMONGO-1444 - Make Project Reactor dependency no longer required for blocking repository usage.

Use ReactiveWrapperConverters for reactive wrapper type conversion to not require Project Reactor for blocking repository usage.

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/repository/support/ReactiveMongoRepositoryFactory.java

@@ -78,7 +78,8 @@ public class ReactiveMongoRepositoryFactory extends RepositoryFactorySupport {
 		this.mappingContext = mongoOperations.getConverter().getMappingContext();
 
 		DefaultConversionService conversionService = new DefaultConversionService();
-		QueryExecutionConverters.registerConvertersIn(conversionService);
+		ReactiveWrapperConverters.registerConvertersIn(conversionService);
+
 		this.conversionService = conversionService;
 		setConversionService(conversionService);
 	}

spring-data-mongodb/src/test/java/org/springframework/data/mongodb/repository/query/ReactiveStringBasedMongoQueryUnitTests.java

@@ -49,6 +49,7 @@ import org.springframework.data.repository.Repository;
 import org.springframework.data.repository.core.support.DefaultRepositoryMetadata;
 import org.springframework.data.repository.query.DefaultEvaluationContextProvider;
 import org.springframework.data.repository.util.QueryExecutionConverters;
+import org.springframework.data.repository.util.ReactiveWrapperConverters;
 import org.springframework.expression.spel.standard.SpelExpressionParser;
 
 import reactor.core.publisher.Flux;
@@ -250,7 +251,7 @@ public class ReactiveStringBasedMongoQueryUnitTests {
 	private ReactiveStringBasedMongoQuery createQueryForMethod(String name, Class<?>... parameters) throws Exception {
 
 		DefaultConversionService conversionService = new DefaultConversionService();
-		QueryExecutionConverters.registerConvertersIn(conversionService);
+		ReactiveWrapperConverters.registerConvertersIn(conversionService);
 
 		Method method = SampleRepository.class.getMethod(name, parameters);
 		ProjectionFactory factory = new SpelAwareProxyProjectionFactory();