[Android] Re-enable native symbol stripping in the release build of the sample app

[kotlarmilos]

Description

This PR fixes size on disk regression introduced in #114148.

[Copilot]

Pull Request Overview

This PR re-enables native symbol stripping in the release build for the Android sample app to address a size on disk regression.

• Re-adds the property in the AndroidSampleApp.csproj file for Release configurations.

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[matouskozak]

LGTM! Have you tried running the startup/size measurements to see what the impact is?

[kotlarmilos]

Yes, I confirmed locally that the size reverts to its previous values. Startup should not be changed by this change.

[kotlarmilos]

Both SOD and startup have been reverted to their previous values.

[matouskozak]

Both SOD and startup have been reverted to their previous values.

Nice, I suspect that the additional size caused that slow-down in startup due to the design of AndroidSampleApp

runtime/src/tasks/AndroidAppBuilder/Templates/MonoRunner.java

Lines 147 to 180 in d960be8

	static void unzipAssets(Context context, String toPath, String zipName) {
	AssetManager assetManager = context.getAssets();
	try (InputStream inputStream = assetManager.open(zipName);
	ZipInputStream zipInputStream = new ZipInputStream(new BufferedInputStream(inputStream))) {
	ZipEntry zipEntry;
	byte[] buffer = new byte[4096];
	while ((zipEntry = zipInputStream.getNextEntry()) != null) {
	String fileOrDirectory = zipEntry.getName();
	File file = new File(toPath, fileOrDirectory);
	File parent = new File(file.getParent());
	if (zipEntry.isDirectory()) {
	file.mkdirs();
	continue;
	}
	else if (!parent.exists()) {
	parent.mkdirs();
	}
	String fullToPath = file.getAbsolutePath();
	Log.i("DOTNET", "Extracting asset to " + fullToPath);
	int count = 0;
	FileOutputStream fileOutputStream = new FileOutputStream(fullToPath);
	while ((count = zipInputStream.read(buffer)) != -1) {
	fileOutputStream.write(buffer, 0, count);
	}
	zipInputStream.closeEntry();
	}
	} catch (IOException e) {
	Log.e("DOTNET", e.getLocalizedMessage());
	}
	}

.

I remember we saw really big difference in release vs debug in the initial measurements caused by this section of the code.