Android: use the correct ABI folder to load uncompressed libs

It's possible that the first ABI from Build.SUPPORTED_ABIS would return
an ABI that's not packaged in the APK, for example if an armeabi-v7a APK
is run under the device supporting arm64-v8a, in that case the returned
path would be that of an arm64-v8a while it's not actually packaged
inside the APK.

Fixes: QTBUG-132155
Pick-to: 6.9
Change-Id: I0f311accee246fa2d1d0b8aaf424d034b4b2d04c
Reviewed-by: André Klitzing <aklitzing@gmail.com>
Reviewed-by: Tinja Paavoseppä <tinja.paavoseppa@qt.io>

src/android/jar/src/org/qtproject/qt/android/QtLoader.java

@@ -375,7 +375,12 @@ abstract class QtLoader {
      **/
     private String getApkNativeLibrariesDir()
     {
-        return QtApkFileEngine.getAppApkFilePath() + "!/lib/" + Build.SUPPORTED_ABIS[0] + "/";
+        if (m_preferredAbi == null) {
+            // Workaround: getLocalLibrariesList() will call preferredAbiLibs()
+            // with valid library names which will assign m_preferredAbi.
+            getLocalLibrariesList();
+        }
+        return QtApkFileEngine.getAppApkFilePath() + "!/lib/" + m_preferredAbi + "/";
     }
 
     /**