Disable use_resource_processor when producing a shared library

Passing --shared-lib to aapt2 causes it to add an extra
onResourcesLoaded method that rewrites resources IDs to include
the package ID determined at runtime.  ResourceProcessorBusyBox
has no equivalent functionality, so disable whenever --shared-lib
is found in aaptflags for now.

Fixes: 330646473
Bug: 331641946
Test: manual
Change-Id: Ibb0c2c7bf7a41ab294f5c84b4b6018cc8a63b0f4