CLI 8.2.x does not respect the targetSdk from AndroidManifest.xml

Issue Description

After we upgraded to {N} 8.2.2 we found that during build, the CLI sets the targetSdk to 31 instead of respecting the value in App_Resources/Android/src/main/AndroidManifest.xml which was in our case set to 30.

The merged, final manifest in the APK has targetSdk 31

This is read from platforms/android/gradle.properties, defined as NS_DEFAULT_COMPILE_SDK_VERSION=31, applied in the platforms/android/app/build.gradle file through

def computeTargetSdkVersion = { -> project.hasProperty("targetSdk") ? targetSdk : NS_DEFAULT_COMPILE_SDK_VERSION as int }

Workaround: specify targetSdk in the config/android/resources/gradle.properties, e.g.

targetSdk = 30

Reproduction

in App_Resources/Android/src/main/AndroidManifest.xml set

<uses-sdk
    android:minSdkVersion="26"
    android:targetSdkVersion="30"/>

run ns build android

check platforms/android/app/build/intermediates/manifest_merge_blame_file/debug/manifest-merger-blame-debug-report.txt or check the generated APK and it's embedded AndroidManifest.

Relevant log output (if applicable)

from `platforms/android/app/build/intermediates/manifest_merge_blame_file/debug/manifest-merger-blame-debug-report.txt` 


7    <uses-sdk
7-->/me/dev/test/platforms/android/app/src/main/AndroidManifest.xml:13:5-15:44
8        android:minSdkVersion="26"
8-->/me/dev/test/platforms/android/app/src/main/AndroidManifest.xml:14:13-39
9        android:targetSdkVersion="31" />
9-->/me/dev/test/platforms/android/app/src/main/AndroidManifest.xml:15:13-42

Environment

No response

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• I have searched the existing issues as well as StackOverflow and this has not been posted before
• This is a bug report
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Inspect platforms/android/gradle.properties and platforms/android/app/build.gradle, focusing on computeTargetSdkVersion. Reproduce with App_Resources/Android/src/main/AndroidManifest.xml and ns build android, then check the manifest-merger-blame report or generated APK. Done means a manifest targetSdkVersion of 30 remains 30 instead of becoming 31.