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
Merged-In: I1c25f65afa196614879071c8655866febebac185
(cherry picked from commit 3f99cd5933)

core/host_java_library.mk

@@ -86,7 +86,7 @@ $(full_classes_compiled_jar): \
     $(NORMALIZE_PATH) \
     $(ZIPTIME) \
     $(JAR_ARGS) \
-    $(EXTRACT_SRCJARS) \
+    $(ZIPSYNC) \
     | $(SOONG_JAVAC_WRAPPER)
 	$(transform-host-java-to-package)
 	$(remove-timestamps-from-package)