Reland "Enable wpt report on WebView builder"

This reverts commit abbf0aa.

Reason for revert: <It turns out fetch webview stable release is not easy. Continue to do this on fyi builders>

Original change's description:
> Revert "Enable wpt report on WebView builder"
>
> This reverts commit 03b8e36.
>
> Reason for revert: <we should get wpt report from stable version WV>
>
> Original change's description:
> > Enable wpt report on WebView builder
> >
> > The report will be populated to wpt.fyi later
> >
> > Bug: 1190323
> > Change-Id: I11aa6ed667fe2047457b61a14b0f6339321a91b4
> > Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2990012
> > Reviewed-by: Rakib Hasan <[email protected]>
> > Commit-Queue: Weizhong Xia <[email protected]>
> > Cr-Commit-Position: refs/heads/master@{#896252}
>
> Bug: 1190323
> Change-Id: I6ebe77608f7b474891fec054549c36e6699f5933
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3171793
> Bot-Commit: Rubber Stamper <[email protected]>
> Auto-Submit: Weizhong Xia <[email protected]>
> Reviewed-by: Rakib Hasan <[email protected]>
> Commit-Queue: Weizhong Xia <[email protected]>
> Cr-Commit-Position: refs/heads/main@{#923109}

Bug: 1190323
Change-Id: I1139fdd63d144ab9a76ba765a2762c392bc36bde
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3194825
Bot-Commit: Rubber Stamper <[email protected]>
Reviewed-by: Rakib Hasan <[email protected]>
Commit-Queue: Weizhong Xia <[email protected]>
Cr-Commit-Position: refs/heads/main@{#926783}

testing/buildbot/chromium.android.fyi.json

@@ -6723,7 +6723,8 @@
     "isolated_scripts": [
       {
         "args": [
-          "--avd-config=../../tools/android/avd/proto/generic_android28.textpb"
+          "--avd-config=../../tools/android/avd/proto/generic_android28.textpb",
+          "--log-wptreport"
         ],
         "isolate_name": "system_webview_wpt",
         "merge": {

testing/buildbot/test_suite_exceptions.pyl

@@ -2735,6 +2735,9 @@
   'system_webview_wpt': {
     'modifications': {
       'android-webview-pie-x86-wpt-fyi-rel': {
+        'args': [
+          '--log-wptreport',
+        ],
         'swarming': {
           'shards': 18,
         },