chore: fixing m1 installation issues for m1 macs

[JessicaSachs]

• Closes Installing beta channel builds on M1 chips is broken #20344

Solution

Because download.js works fine since it uses arch() instead of os.arch() we should just update install.js to do the same thing for the beta channel.

This fix is unrelated to any of the rosetta issues or any native support for m1... it just brings Beta channel installation in parity with the prod builds.

Testing

I can test this locally once it's merged into 10.0-release, but ideally we can get this branch building the beta channel, but I'm not really sure how to set this up for random branches. @flotwig maybe?

I added a commit really quick to build and test this. I'll take it out after I test manually. Don't merge until then.

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[jennifer-shehane]

@JessicaSachs You'll want to leave the 10.0-release branch since this would erase those rules when it merges into 10.0-release. You'll want to replace anywhere that fix-darwin-win32-node-modules-install is written with this branch: chore/beta-release-m1-support

[JessicaSachs]

I'm reverting this change completely after i test.

I added a commit really quick to build and test this. I'll take it out after I test manually. Don't merge until then.

[cypress]

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Test summary

19278 • 0 • 218 • 0 • 1

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Run details

Project	cypress
Status	Passed
Commit	df6c026
Started	Feb 23, 2022 11:24 PM
Ended	Feb 23, 2022 11:36 PM
Duration	11:31 💡
OS	Linux Debian - 10.10
Browser	Multiple

View run in Cypress Dashboard ➡️

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Flakiness

	cypress/integration/commands/net_stubbing_spec.ts		1
1	network stubbing > waiting and aliasing > can timeout waiting on a single request using "alias.request"

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[JessicaSachs]

I manually tested. Installing the beta build channel for m1 chips works now. In the future we should have an integration test with a real machine spun up by MacStadium, but I think that'll happen once we tackle the native Apple Silicone support.