Extract class files from dep_api_srcs instead of java files

Currently, stub java files are extracted from srcjar file provided from
dep_api_srcs in java_api_library module generated in java_sdk_library
per api scope. However, compiling the java files may lead to difference
in the content of the generated class files even if the stub java files
are equivalent, as javac may arbitrarily add overridden methods. Thus,
create a stub jar file instead of creating a stub srcjar file and
compiling it, in order to guarantee stub jar files content equivalence
and thus enable hiddenapi during from-text stub build.

Note that this change does not fully resolve differences between the
full api surface csv and the per sdk_library csv. Instead, it removes
the difference caused by methods arbitrarily added by javac.

This change also renames dep_api_srcs to full_api_surface_stubs to be
more intuitive.

Test: rebase on top of aosp/2617274 and `m --build-from-text-stub`
Bug: 275570206
Change-Id: I22b6d56624633681f5c3b000370b5782655c7b8d