[LayoutNG] Fix what replaced elements resolve their block-size against.

Previously if we had a table-cell which was %-block-size based,
replaced elements would resolve their percentages against this height
during both the "measure" and "layout" phases.

This was incorrect, instead during the measure phase we should only
resolve a percentage against a "fixed" height table-cell, and indefinite
for all other cases.

Bug: 1001083
Change-Id: If4217a7545830d1279911753930bf821c2c023d5
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1793942
Commit-Queue: Ian Kilpatrick <ikilpatrick@chromium.org>
Reviewed-by: Morten Stenshorne <mstensho@chromium.org>
Cr-Commit-Position: refs/heads/master@{#695809}