DOM: Make moveBefore() throw for all pre-move validity checks (#48642)
This CL makes moveBefore() match the spec PR 1, with regard to the
agreed-upon error-throwing behavior for all pre-moving validity and
hierarchy conditions. This means throwing an exception for:
- Disconnected parent destination or move target
- Cross-document Nodes
- Destination parent that is not an Element node
- Move target that is not an Element or character data
Bug: 40150299
Change-Id: Iaf5243fb2762e21ede068a222600bd158859fe92
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5935350
Reviewed-by: Noam Rosenthal nrosenthal@chromium.org
Commit-Queue: Dominic Farolino dom@chromium.org
Cr-Commit-Position: refs/heads/main@{#1369303}
Co-authored-by: Dominic Farolino dom@chromium.org