Fix checkstyle issues and test failures

See gh-27955
See gh-28442

Author: philwebb

spring-core/spring-core.gradle

@@ -111,7 +111,7 @@ jar {
 test {
 	// Make sure the classes dir is used on the test classpath (required by ResourceTests).
 	// When test fixtures are involved, the JAR is used by default.
-	classpath = sourceSets.main.output.classesDirs + classpath - files(jar.archiveFile)
+	classpath = sourceSets.main.output.classesDirs + files(sourceSets.main.output.resourcesDir) + classpath - files(jar.archiveFile)
 
 	// Ensure that BlockHound tests run on JDK 13+. For details, see:
 	// https://github.com/reactor/BlockHound/issues/33

spring-core/src/main/java/org/springframework/core/io/support/SpringFactoriesLoaderRuntimeHintsRegistrar.java

@@ -95,4 +95,4 @@ private Class<?> resolveClassName(ClassLoader classLoader, String factoryClassNa
 		}
 	}
 
-}
+}

spring-core/src/test/java/org/springframework/core/annotation/CoreAnnotationsRuntimeHintsRegistrarTests.java

@@ -48,14 +48,14 @@ void setup() {
 	@Test
 	void aliasForHasHints() {
 		assertThat(this.hints.reflection().getTypeHint(TypeReference.of(AliasFor.class)))
-				.satisfies((hint) -> assertThat(hint.getMemberCategories())
+				.satisfies(hint -> assertThat(hint.getMemberCategories())
 						.containsExactly(MemberCategory.INVOKE_DECLARED_METHODS));
 	}
 
 	@Test
 	void orderAnnotationHasHints() {
 		assertThat(this.hints.reflection().getTypeHint(TypeReference.of(Order.class)))
-				.satisfies((hint) -> assertThat(hint.getMemberCategories())
+				.satisfies(hint -> assertThat(hint.getMemberCategories())
 						.containsExactly(MemberCategory.INVOKE_DECLARED_METHODS));
 	}