Why intent-filter action not get recognized when pushing to priv-app?

Question

I am working on a system app (system/priv-app/). When I add a new intent filter action to one of activity in AndroidManifest and push the new apk to priv-app and try to launch that activity with adb shell (also from thirt party app), I get Error: Activity not started, unable to resolve Intent { act=com.example.SETTINGS flg=0x10000000 }. Tried reboot after pushing the app to priv-app.

Manifest

    <activity android:name=".ui.activity.AppSettingsActivity"
        android:launchMode="singleTop"
            android:exported="true">
            <meta-data android:name="distractionOptimized" android:value="true"/>
            <intent-filter>
                <action android:name="com.example.SETTINGS"/>
                <category android:name="android.intent.category.DEFAULT" />
            </intent-filter>
</activity>

Launch that activity with below adb command

adb shell am start -a com.example.SETTINGS

and from third party app

startActivity(new Intent("com.example.SETTINGS"));