[INTERNAL][FIX] sap.m.ObjectAttribute: HCB design

Aligned HCB design for Object Attribute inside Object Header

Change-Id: I6305ff0113614de88baf5c11f7a589c0d9cffd3b
CR-Id: 012003146900009323602014
(cherry picked from commit 0897fd9634fc55382fe6e135a12b8a4fca7ad294)
Merge "[INTERNAL][FIX] sap.m.ObjectAttribute: HCB design" into rel-1.26