Android: fix style extraction when set to none

If extract_android_style meta data is set to none currently the app
still tries to extract full stlye and crashes. If this option is set
no style data should be extracted after this patch.

Fixes: QTBUG-121667
Change-Id: I764e1eb6a582073196f991ca930d245d17a1f7e5
Reviewed-by: Ville Voutilainen <ville.voutilainen@qt.io>
(cherry picked from commit ff6a6d3285c48d5e54bf03361115116f58461e33)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>

examples/corelib/platform/androidnotifier/android/AndroidManifest.xml

@@ -41,10 +41,6 @@
             <meta-data
                 android:name="android.app.background_running"
                 android:value="false"/>
-
-            <meta-data
-                android:name="android.app.extract_android_style"
-                android:value="none" />
         </activity>
     </application>
 </manifest>

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

@@ -154,6 +154,9 @@ class ExtractStyle {
         String dataDir = context.getApplicationInfo().dataDir;
         m_stylePath = dataDir + "/qt-reserved-files/android-style/" + dpi + "/";
 
+        if (extractOption.equals("none"))
+            return m_stylePath;
+
         if (extractOption.isEmpty())
             extractOption = "minimal";