Call invalidate() during updateView() for updating the header.

This issue is triggered due to onAppsUpdated() randomly due to app installing/uninstalling/updating/archiving. Eventually
onBind() is called but logs shows evidence that the state is correct (even though it doesn't reflect that), hence invalidating will fix this issue.
We can't call notifyItemChange() in updateView() since updateView() can be part of onBind() in which case means this is part of a scrolling gesture. notifyItemChange()
via adapter index will also not work in reset() since doing so will mess up upon animation.

bug: 373345958
Test: manual/presubmit
Flag: NONE invalidating when updateView() is called
Change-Id: Ibc99cc70562575cadf035136e50e9e5eec1e70ea