Revert of [test] Speculatively remove local-tests from archive (patchset #2...

Revert of [test] Speculatively remove local-tests from archive (patchset #2 id:20001 of https://codereview.chromium.org/2643983002/ )

Reason for revert:
Breaks all windows bots:
https://build.chromium.org/p/client.v8/builders/V8%20Win32%20-%20debug/builds/6811

Original issue's description:
> [test] Remove local-tests from test262 archive and add to .isolate
>
> This might help fix the bots, which are broken in e.g.,
> https://build.chromium.org/p/tryserver.v8/builders/v8_mac_rel_ng_triggered/builds/14011
>
> The archive was added in order to transmit test262 tests more rapidly.
> It doesn't serve much of a purpose for local-tests. I naively added
> local-tests there out of symmetry. However, the BUILD.gn file does not
> regenerate an archive when files are only deleted and not added or
> changed. Since the performance concern is not present for the small
> volume of local-tests, this patch reverts to the more normal mechanism
> for sending over dependencies, with test262.isolate.
>
> R=adamk
>
> Review-Url: https://codereview.chromium.org/2643983002
> Cr-Commit-Position: refs/heads/master@{#42485}
> Committed: https://chromium.googlesource.com/v8/v8/+/9f545ea96f18b7036ac6ec43e359d63f41c3686a

TBR=adamk@chromium.org,littledan@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Review-Url: https://codereview.chromium.org/2640223003
Cr-Commit-Position: refs/heads/master@{#42491}

test/test262/archive.py

@@ -29,6 +29,7 @@ def filter_git(tar_info):
 with tarfile.open('data.tar', 'w') as tar:
   tar.add('data', filter=filter_git)
   tar.add('harness', filter=filter_git)
+  tar.add('local-tests')
 
 # Workaround for GN. We can't specify the tarfile as output because it's
 # not in the product directory. Therefore we track running of this script

test/test262/list.py

@@ -10,7 +10,8 @@ from itertools import chain
 
 os.chdir(os.path.dirname(os.path.abspath(__file__)))
 
-for root, dirs, files in chain(os.walk("data"), os.walk("harness")):
+for root, dirs, files in chain(os.walk("data"), os.walk("harness"),
+                               os.walk("local-tests")):
   dirs[:] = [d for d in dirs if not d.endswith('.git')]
   for name in files:
     # These names are for gyp, which expects slashes on all platforms.

test/test262/test262.isolate

@@ -9,7 +9,6 @@
       'harness-adapt.js',
       'test262.status',
       'testcfg.py',
-      'local-tests/',
     ],
   },
   'includes': [