Use StartActivityForResult to launch the intent.

Revert back to StartActivity once HelpUtils.getHelpIntent is
refactored.
More info in b/38230998

Bug: 36604276
Bug: 33090449
Test: Tapping on Analog accessory notification launch
the support article in GMH app.
Change-Id: If30f7bc627b0a9cf90ceb875665b575e7f69b16d

src/com/android/settings/HelpTrampoline.java

@@ -39,7 +39,11 @@ public class HelpTrampoline extends Activity {
 
             final Intent intent = HelpUtils.getHelpIntent(this, value, null);
             if (intent != null) {
-                startActivity(intent);
+                /*
+                 * TODO: b/38230998.
+                 * Move to startActivity once the HelpUtils.getHelpIntent is refactored
+                 */
+                startActivityForResult(intent, 0);
             }
 
         } catch (Resources.NotFoundException | ActivityNotFoundException e) {