chore: only run Windows on main branches

[flotwig]

• For https://github.com/cypress-io/cypress-internal/issues/461

User facing changelog

Additional details

• Removes Windows from PRs and branch builds by default, cuz It's expensive, yo. And we don't need to do this as badly now that we aren't rapidly iterating on 10.0 pre-releases. We will be forced to reckon with Windows every 2 weeks like in the pre-10.0 days.

Steps to test

How has the user experience changed?

PR Tasks

• [na] Have tests been added/updated?
• [na] Has the original issue (or this PR, if no issue exists) been tagged with a release in ZenHub? (user-facing changes only)
• [na] Has a PR for user-facing changes been opened in cypress-documentation?
• [na] Have API changes been updated in the type definitions?

[cypress-bot]

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[ryanthemanuel]

Do we want to back this off to medium? Or do we want to explore that separately?

[flotwig]

Right now it looks like it's still too flaky 😕 #22821

[ryanthemanuel]

Sadness. Oh well this is a good option for now! 👍🏻

[cypress]

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Test summary

37721 • 0 • 456 • 0 • 10

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Run details

Project	cypress
Status	Passed
Commit	9a28a00
Started	Jul 15, 2022 10:31 PM
Ended	Jul 15, 2022 10:49 PM
Duration	17:51 💡
OS	Linux Debian - 10.11
Browser	Multiple

View run in Cypress Dashboard ➡️

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Flakiness

	actions/click.cy.js		1
1	... > scroll-behavior > can scroll to and click elements in html with scroll-behavior: smooth
	xhr.cy.js		4
1	... > logs response
2	... > logs request + response headers
3	... > logs Method, Status, URL, and XHR
4	... > logs response
This comment includes only the first 5 flaky tests. See all 10 flaky tests in the Cypress Dashboard.

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