Adding the plugin loading init in reset widget process

Adding the plugin loading init in reset widget process

[Issue#] N/A
[Problem] App can't get the latest bundle data in onload event when app get the reset event.
[Cause] WRT set the latest bundle data in loadFinisdedCallback when app get the reset event.
        But it is too late.
        And, in the reset widget process does not have initializePluginLoading.
[Solution] Adding the plugin loading init in reset widget process.
[SCMRequest] N/A

Change-Id: Ib292afffccddaa957b5ba6abe4e804d0031ad980