infra: More shards for interactive_ui_tests_no_field_trial from linux-win-cross-rel

This should fix timeouts like https://chromium-swarm.appspot.com/task?id=6a6ae76b11968d10

Bug: 332248571
Change-Id: I59d2fc7b336a30aeddf3a11269d64d78fab7ea85
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5657871
Commit-Queue: Erik Staab <estaab@chromium.org>
Auto-Submit: Junji Watanabe <jwata@google.com>
Reviewed-by: Erik Staab <estaab@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1319783}

diff --git a/testing/buildbot/chromium.win.json b/testing/buildbot/chromium.win.json
index cff2e4b..eac96f4 100644
--- a/testing/buildbot/chromium.win.json
+++ b/testing/buildbot/chromium.win.json

@@ -6529,7 +6529,8 @@
             "cpu": "x86-64",
             "os": "Windows-10-19045"
           },
-          "service_account": "chromium-tester@chops-service-accounts.iam.gserviceaccount.com"
+          "service_account": "chromium-tester@chops-service-accounts.iam.gserviceaccount.com",
+          "shards": 4
         },
         "test": "interactive_ui_tests",
         "test_id_prefix": "ninja://chrome/test:interactive_ui_tests/"

diff --git a/testing/buildbot/test_suite_exceptions.pyl b/testing/buildbot/test_suite_exceptions.pyl
index 46dd6d6..de6f3901 100644
--- a/testing/buildbot/test_suite_exceptions.pyl
+++ b/testing/buildbot/test_suite_exceptions.pyl

@@ -3470,6 +3470,12 @@
           'shards': 4,
         },
       },
+      # shadow Win10 Tests x64
+      'linux-win-cross-rel': {
+        'swarming': {
+          'shards': 4,
+        },
+      },
     },
     'remove_from': [
       'Win11 Tests x64',