Add missing reflection hints on Jakarta types

This commit adds reflection hints for `jakarta.inject.Provider` and
ensures that hints are always contributed even if jakarta classes are
not on the classpath.

Fixes gh-31259

spring-beans/src/test/java/org/springframework/beans/factory/annotation/JakartaAnnotationsRuntimeHintsTests.java

@@ -18,6 +18,7 @@ package org.springframework.beans.factory.annotation;
 
 
 import jakarta.inject.Inject;
+import jakarta.inject.Provider;
 import jakarta.inject.Qualifier;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
@@ -51,6 +52,11 @@ class JakartaAnnotationsRuntimeHintsTests {
 		assertThat(RuntimeHintsPredicates.reflection().onType(Inject.class)).accepts(this.hints);
 	}
 
+	@Test
+	void jakartaProviderAnnotationHasHints() {
+		assertThat(RuntimeHintsPredicates.reflection().onType(Provider.class)).accepts(this.hints);
+	}
+
 	@Test
 	void jakartaQualifierAnnotationHasHints() {
 		assertThat(RuntimeHintsPredicates.reflection().onType(Qualifier.class)).accepts(this.hints);