Actually put release note for bug 63444 in RELEASE-NOTES-1.23 in master

Change I886b44bd removed the note from RELEASE-NOTES-1.24 because the
change was backported to the REL1_23 branch, but it didn't actually put
the note into RELEASE-NOTES-1.23 in the master branch. This might be
problematic if REL1_23 later gets merges from master.

Change-Id: I0ee55deb9b44b7854146ca65b1c4fc6f8ab0e1f1