fix(ci): e2e snapshot test flake

[emosbaugh]

What this PR does / why we need it:

the test is failing because there are two loaders on the page

Error: expect.toBeVisible: Error: strict mode violation: locator('.Loader') resolved to 2 elements:
    1) <div class="Loader u-marginLeft--10 u-display--inlineBlock">…</div> aka locator('div').filter({ hasText: /^Updating$/ }).locator('div')
    2) <div class="Loader u-display--inlineBlock">…</div> aka locator('.flex-column > .Loader')
Call log:
  - Expect "toBeVisible" with timeout 5000ms
waiting for locator('.Loader')

https://github.com/replicatedhq/embedded-cluster/actions/runs/17257008089/job/49028266947#step:4:307

Which issue(s) this PR fixes:

Does this PR require a test?

Does this PR require a release note?

Does this PR require documentation?

[github-actions]

This PR has been released (on staging) and is available for download with a embedded-cluster-smoke-test-staging-app license ID.

Online Installer:

curl "https://staging.replicated.app/embedded/embedded-cluster-smoke-test-staging-app/ci/appver-dev-3377c9e" -H "Authorization: $EC_SMOKE_TEST_LICENSE_ID" -o embedded-cluster-smoke-test-staging-app-ci.tgz

Airgap Installer (may take a few minutes before the airgap bundle is built):

curl "https://staging.replicated.app/embedded/embedded-cluster-smoke-test-staging-app/ci-airgap/appver-dev-3377c9e?airgap=true" -H "Authorization: $EC_SMOKE_TEST_LICENSE_ID" -o embedded-cluster-smoke-test-staging-app-ci.tgz

Happy debugging!