[Auto Pin Confirm]: Fix the usage of LockPatternUtils#isAutoPinConfirmFeatureAvailable method

- The method isAutoPinConfirmFeatureAvailable is changed to static, so refactoring the code to use it properly.

Bug: 270315296
Test: Manual Test
Test: atest AutoPinConfirmPreferenceControllerTest
Test: atest ChooseLockPasswordTest
Change-Id: Idecaeca296b9ae9acdd0c094dcbb736db31b74b3

src/com/android/settings/security/screenlock/AutoPinConfirmPreferenceController.java

@@ -57,7 +57,7 @@ public class AutoPinConfirmPreferenceController extends AbstractPreferenceContro
 
     @Override
     public boolean isAvailable() {
-        return mLockPatternUtils.isAutoPinConfirmFeatureAvailable() && isPinLock()
+        return LockPatternUtils.isAutoPinConfirmFeatureAvailable() && isPinLock()
                 && isPinLengthEligibleForAutoConfirmation();
     }