Test refined exclusion handling with dependency that uses GMM

This is a follow-on to cf49bef and adds a test that verifies the
behavior when a dependency has Gradle module metadata and in this
metadata that is a dependency upon a platform.

See gh-360

src/test/java/io/spring/gradle/dependencymanagement/DependencyManagementPluginIntegrationTests.java

@@ -495,6 +495,14 @@ void resolutionSucceedsWhenDependencyReliesOnDependencyManagementFromItsAncestor
 				"spring-core-5.3.27.jar", "spring-jcl-5.3.27.jar");
 	}
 
+	@Test
+	void resolutionSucceedsWhenDependencyReliesOnConstraintsFromPlatformDependencies() {
+		this.gradleBuild.runner().withArguments("resolve").build();
+		assertThat(readLines("resolved.txt")).containsExactly("guava-32.1.1-jre.jar", "failureaccess-1.0.1.jar",
+				"jsr305-3.0.2.jar", "checker-qual-3.33.0.jar", "error_prone_annotations-2.18.0.jar",
+				"j2objc-annotations-2.8.jar");
+	}
+
 	private void writeLines(Path path, String... lines) {
 		try {
 			Path resolvedPath = this.gradleBuild.runner().getProjectDir().toPath().resolve(path);

src/test/resources/io/spring/gradle/dependencymanagement/DMPIT/resolutionSucceedsWhenDependencyReliesOnConstraintsFromPlatformDependencies.gradle

@@ -0,0 +1,21 @@
+plugins {
+	id "java"
+	id "io.spring.dependency-management"
+}
+
+repositories {
+	mavenCentral()
+}
+
+dependencies {
+	implementation("com.google.guava:guava:32.1.1-jre");
+}
+
+tasks.register("resolve") {
+	doFirst {
+		def files = project.configurations.compileClasspath.resolve()
+		def output = new File("${buildDir}/resolved.txt")
+		output.parentFile.mkdirs()
+		files.collect { it.name }.each { output << "${it}\n" }
+	}
+}