commit d2980b61c258b1c8175edf1b6577ddd1d8a4ff34
author Gergő Tisza <tgr.huwiki@gmail.com> Thu Jun 22 23:33:28 2023 +0200
committer Urbanecm <martin.urbanec@wikimedia.cz> Fri Jun 23 13:37:44 2023 +0000
tree ebd953f7ebad9b4faf312cd3dc65a842e3e1af65
parent b1f7781f1fa05ad5197ce29e9537a44518dbae6f

Section images: Placeholder should serialize to empty string

During rejection, we do a null edit, but the presence of the
placeholder in the Parsoid HTML would turn it into a real
edit.

Bug: T340170
Change-Id: I3ec2801fba1885bd96e567eae868723a1501b128
(cherry picked from commit 438646e965e3eb62441003643d51d0770651873e)