test: [M3-10708] - Experimental Cypress workarounds for test failures

[jdamore-linode]

Description 📝

This is an experimental change to see if we can work around the Cypress test failures we're seeing since merging PR #13084. These failures stem from performance issues in the v4beta /account/events endpoint which should be resolved soon. These changes are intended to get the tests in a workable state during the interim, and are intended to be removed as soon as possible.

After some brief manual testing, this seems to reliably fix some of the failures but I'm not certain it will fix all of them. I'm opening this PR to see how it does in CI, whether there are any other major failures remaining, and whether we can address those as well. If this doesn't make a substantial impact, I plan to close the PR so we can explore other routes instead.

Changes 🔄

• Fetch account events when Cypress starts, and mock Cloud Manager's initial fetch to the endpoint using this data throughout the suite
• Misc improvement to smoke-create-image.spec.ts to ensure intercept/mock gets set up before Cloud fires the request

Scope 🚢

Upon production release, changes in this PR will be visible to:

• All customers
• Some customers (e.g. in Beta or Limited Availability)
• No customers / Not applicable

Target release date 🗓️

N/A. This is purely for development purposes.

How to test 🧪

Pending

[jdamore-linode]

Welp 🤷‍♂️