Remove update_engine_sideload from the system image

update_engine_sideload is not a system module but a recovery module.
It must not be listed in the system image.
All transitive dependent modules in the system image must use generic
configuration. So only the system modules can be listed in the system
image module.

Bug: 406403791
Test: read all modules in the system image module
Change-Id: I6e6ab33046f9260c53d908d5412a010a16129131