Fix for race condition issue when widget is pausing

Fix for race condition issue when widget is pausing

[Issue#] N/A
[Problem] It was possible widget opened new frame and loaded content,
but bundle callbacks were partially disabled. It leaded to leak of
plugins in new frame.
[Cause] N/A
[Solution] Do not disable bundle callbacks
[Verification] Run webapi-tizen-power-tests.wgt suite (/test/webapi project)
No fails because of missing tizen object.

This reverts commit 763e8791af378fbe37af22d21635d3da04853692.

Change-Id: I842d41804a426f7d240d1761057be528ba28960b