Disable auto installclean for AAPT config change

PRODUCT_AAPT_CONFIG and PRODUCT_AAPT_PREF_CONFIG don't affect the
installed file list, they only affect how some files are built. The
changing command line is already noticed by ninja, so we'll only re-run
the necessary commands instead of a full installclean.

Change-Id: Ib918b2edeefc539b7f88cb22a1d751c397973b1d