[android] fix crash due to missing method for checkForUpdate()

Signed-off-by: lizzie <lizzie@eden-emu.dev>

src/android/app/build.gradle.kts

@@ -88,7 +88,6 @@ android {
                         "-DBUILD_TESTING=OFF",
                         "-DYUZU_TESTS=OFF",
                         "-DDYNARMIC_TESTS=OFF",
-                        "-DENABLE_UPDATE_CHECKER=ON",
                         *extraCMakeArgs.toTypedArray()
                     )
                 )

src/android/app/src/main/java/org/yuzu/yuzu_emu/NativeLibrary.kt

@@ -33,6 +33,7 @@ import org.yuzu.yuzu_emu.applets.web.WebBrowser
  * with the native side of the Yuzu code.
  */
 object NativeLibrary {
+    @Keep
     data class UpdateResult(
         var tag: String = "",
         var title: String = "",

src/android/app/src/main/jni/native.cpp

@@ -1696,12 +1696,8 @@ JNIEXPORT jboolean JNICALL Java_org_yuzu_yuzu_1emu_NativeLibrary_isNightlyBuild(
 #endif
 }
 
+JNIEXPORT jobject JNICALL Java_org_yuzu_yuzu_1emu_NativeLibrary_checkForUpdate( JNIEnv* env, jobject obj) {
 #ifdef ENABLE_UPDATE_CHECKER
-
-
-JNIEXPORT jobject JNICALL Java_org_yuzu_yuzu_1emu_NativeLibrary_checkForUpdate(
-        JNIEnv* env,
-        jobject obj) {
     std::optional<Common::Net::Release> release = UpdateChecker::GetUpdate();
     if (!release) return nullptr;
 
@@ -1767,9 +1763,10 @@ JNIEXPORT jobject JNICALL Java_org_yuzu_yuzu_1emu_NativeLibrary_checkForUpdate(
     env->DeleteLocalRef(updateResultClass);
 
     return updateResult;
-}
-
+#else
+    return nullptr;
 #endif
+}
 
 JNIEXPORT jstring JNICALL Java_org_yuzu_yuzu_1emu_NativeLibrary_getBuildVersion(
         JNIEnv* env,