Sheriff: Disable two tests in ExtensionInstallDialogViewInteractiveBrowserTest on windows

These tests are flaky on Win10 bot.

TBR=finnur@chromium.org

No-Try: true
Bug: 1126736, 1126741
Change-Id: Iac4570880a46791493c8c0027df59fae674e24ad
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2662032


Reviewed-by: Illia Klimov <elklm@google.com>
Reviewed-by: Illia Klimov <elklm@chromium.org>
Commit-Queue: Illia Klimov <elklm@chromium.org>
Auto-Submit: Yuki Yamada <yukiy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#849094}