E2E TOTP auth test: Replace /settings/general redirect target with /plans

[lsl]

Fixes #99155

Proposed Changes

• The /settings/general calypso route is moving / being untangled. Since we don't know if that route will be around much longer, I'm updating this to look for a /plans redirect which is much more likely to survive untangling.
• The sleep for the woo test needed moving as it was causing a failure

Testing Instructions

yarn workspace wp-e2e-tests test -- test/e2e/specs/authentication/authentication__totp.ts

[github-actions]

Calypso Live (direct link)

https://calypso.live?image=registry.a8c.com/calypso/app:build-131758

Jetpack Cloud live (direct link)

https://calypso.live?image=registry.a8c.com/calypso/app:build-131758&env=jetpack

Automattic for Agencies live (direct link)

https://calypso.live?image=registry.a8c.com/calypso/app:build-131758&env=a8c-for-agencies

[okmttdhr]

👍

[matticbot]

This PR does not affect the size of JS and CSS bundles shipped to the user's browser.

Generated by performance advisor bot at iscalypsofastyet.com.