Replace extract_srcjars.sh with zipsync

Use zipsync instead of extract_srcjars.sh.

Also fixes an issue where unzipping a resource zip would
ignore anything that wasn't a *.java file.

Bug: 73885582
Test: m checkbuild
Change-Id: I1c25f65afa196614879071c8655866febebac185
diff --git a/core/aapt2.mk b/core/aapt2.mk
index 895bd37..7d9d8ce 100644
--- a/core/aapt2.mk
+++ b/core/aapt2.mk
@@ -52,7 +52,7 @@
 ifneq ($(my_generated_res_zips),)
 my_zipped_resources_flata := $(my_compiled_res_base_dir)/zip_res.flata
 $(my_zipped_resources_flata): PRIVATE_SOURCE_RES_ZIPS := $(my_generated_res_zips)
-$(my_zipped_resources_flata) : $(my_generated_res_deps) $(AAPT2) $(EXTRACT_SRCJARS)
+$(my_zipped_resources_flata) : $(my_generated_res_deps) $(AAPT2) $(ZIPSYNC)
 	@echo "AAPT2 compile $@ <- $(PRIVATE_SOURCE_RES_ZIPS)"
 	$(call aapt2-compile-resource-zips)