Use TypeReference consistently in hints writer

Closes gh-28606

spring-core/src/test/java/org/springframework/aot/nativex/ProxyHintsWriterTests.java

@@ -63,6 +63,16 @@ public class ProxyHintsWriterTests {
 				]""", hints);
 	}
 
+	@Test
+	void shouldWriteInnerClass() throws JSONException {
+		ProxyHints hints = new ProxyHints();
+		hints.registerJdkProxy(Inner.class);
+		assertEquals("""
+				[
+					{ "interfaces": [ "org.springframework.aot.nativex.ProxyHintsWriterTests$Inner" ] }
+				]""", hints);
+	}
+
 	@Test
 	void shouldWriteCondition() throws JSONException {
 		ProxyHints hints = new ProxyHints();
@@ -81,4 +91,8 @@ public class ProxyHintsWriterTests {
 		JSONAssert.assertEquals(expectedString, out.toString(), JSONCompareMode.NON_EXTENSIBLE);
 	}
 
+	interface Inner {
+
+	}
+
 }

spring-core/src/test/java/org/springframework/aot/nativex/ReflectionHintsWriterTests.java

@@ -158,6 +158,27 @@ public class ReflectionHintsWriterTests {
 				""", hints);
 	}
 
+	@Test
+	void methodWithInnerClassParameter() throws JSONException {
+		ReflectionHints hints = new ReflectionHints();
+		hints.registerType(Integer.class, builder -> builder.withMethod("test", List.of(TypeReference.of(Inner.class)),
+				b -> b.withMode(ExecutableMode.INVOKE)));
+
+		assertEquals("""
+				[
+					{
+						"name": "java.lang.Integer",
+						"methods": [
+							{
+								"name": "test",
+								"parameterTypes": ["org.springframework.aot.nativex.ReflectionHintsWriterTests$Inner"]
+							}
+						]
+					}
+				]
+				""", hints);
+	}
+
 	@Test
 	void methodAndQueriedMethods() throws JSONException {
 		ReflectionHints hints = new ReflectionHints();
@@ -194,4 +215,9 @@ public class ReflectionHintsWriterTests {
 		JSONAssert.assertEquals(expectedString, out.toString(), JSONCompareMode.NON_EXTENSIBLE);
 	}
 
+
+	static class Inner {
+
+	}
+
 }