[TablesNG] Fix OOF static-position of empty baseline-aligned table-cells

Alignment typically does affect the static-position of any
OOF-positioned children inside of a table-cell. However when we are
baseline-aligned, we should only apply the adjustment if we have
*inflow* children.

This doesn't shift the OOF-positioned children if we have no inflow
children.

Bug: 1206654
Change-Id: I54e80831148407797354157d2c0d19afbb2a7858
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2880809


Commit-Queue: Ian Kilpatrick <ikilpatrick@chromium.org>
Reviewed-by: Aleks Totic <atotic@chromium.org>
Cr-Commit-Position: refs/heads/master@{#880652}