Ignore unused attachments in the command splitter.
Ignore unused attachments in the command splitter.

BUG: b/148600467

google/agi,google/gapid,google/gapid,google/gapid,google/gapid,google/gapid,google/gapid,google/agi,google/gapid,google/agi,google/agi,google/agi,google/agi,google/gapid,google/agi,google/agi