Upgrade to Coroutines 1.3.0

Closes gh-23535

build.gradle

@@ -19,7 +19,7 @@ ext {
 	moduleProjects = subprojects.findAll { it.name.startsWith("spring-") }
 
 	aspectjVersion       = "1.9.4"
-	coroutinesVersion    = "1.3.0-RC2"
+	coroutinesVersion    = "1.3.0"
 	freemarkerVersion    = "2.3.28"
 	groovyVersion        = "2.5.7"
 	hsqldbVersion        = "2.5.0"

spring-core/src/main/java/org/springframework/core/ReactiveAdapterRegistry.java

@@ -349,8 +349,8 @@ public class ReactiveAdapterRegistry {
 
 			registry.registerReactiveType(
 					ReactiveTypeDescriptor.multiValue(kotlinx.coroutines.flow.Flow.class, kotlinx.coroutines.flow.FlowKt::emptyFlow),
-					source -> kotlinx.coroutines.reactor.FlowKt.asFlux((kotlinx.coroutines.flow.Flow<?>) source),
-					kotlinx.coroutines.reactive.FlowKt::asFlow
+					source -> kotlinx.coroutines.reactor.ReactorFlowKt.asFlux((kotlinx.coroutines.flow.Flow<?>) source),
+					kotlinx.coroutines.reactive.ReactiveFlowKt::asFlow
 			);
 		}
 	}