Allocate a new destination binding if it does not exist (#3743)
Allocate a new destination binding if it does not exist (#3743)

during the copy of the descriptor set. Previously copy was
incorrectly dropped if the destination binding had not been
allocated

Bug id: 146319334
google/agi,google/agi,google/agi,google/agi,google/agi,google/agi,google/gapid,google/gapid,google/agi,google/gapid,google/agi,google/gapid,google/gapid,google/gapid,google/gapid,google/gapid