This is an important patch contains some crtical bug fixes for
the DOM mutation observer.
Previously the observer did not handle complex DOM movement very
well. So in this patch we optimized this by distinguishing moved
node better and added a resolving queue to avoid the error caused
by ordering.
Increase the throttle value of collecting mouse move and add a
transition time to the replayer's mouse. This may decrease the
size of mouse move data and make the replay movement more smooth.
Another change is to move and hover when click event is replayed.
This is to improve the replay of some programmatic click, such as
E2E tests.
If an element was blocked, its child nodes should also be blocked.
The interactions and mutations on the element and its child nodes
also need to be blocked.
This change include two critical fix for both recorder and replayer.
In the recorder, previously we filter text and attribute mutations by check its target id,
but this was a wrong approach because removed node also has id at the callback moment.
We corrected this by checking whether the mirror map still has the target id in its keys.
In the replayer side, the issue was we got exceptions when calling insertBefore which says
the ref node was not the child node of the caller node. This will happen when the previous
or next sibling has been removed in the same callback but the previousId or nextId was
recorded.
After apply remove node mutations before add node mutations, we can make sure the removed
siblings will not exist in the mirror map when apply add node mutations. When we get node
from mirror map with an removed id, we will get null and pass it to insertBefore which
is valid.
As a side note, this apply order is safe because we ensured all the remove node mutations
do not include removing newly added nodes in the same callback.
