updateConfigs() might throw during tests (3/n)

The callback might be run in-between setUp() and tearDown() when
the permission READ_DEVICE_CONFIG has been dropped and crash tests.

Bug: 178675924
Test: atest PackageWatchdogTest
Change-Id: Iefd31d08f71340706b64d84d44c41151b21193bf

services/core/java/com/android/server/PackageWatchdog.java

@@ -982,7 +982,11 @@ public class PackageWatchdog {
                     if (!DeviceConfig.NAMESPACE_ROLLBACK.equals(properties.getNamespace())) {
                         return;
                     }
-                    updateConfigs();
+                    try {
+                        updateConfigs();
+                    } catch (Exception ignore) {
+                        Slog.w(TAG, "Failed to reload device config changes");
+                    }
                 });
     }