Install build requirements in pre_build_script.sh

[dbort]

Stack from ghstack (oldest at bottom):

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• -> #3466

Manually install build requirements because python setup.py bdist_wheel does not install them.

Differential Revision: D56857485

[pytorch-bot[bot]]

:link: Helpful Links

:test_tube: See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/executorch/3466

• :page_facing_up: Preview Python docs built from this PR

Note: Links to docs will display an error until the docs builds have been completed.

:x: 2 New Failures

As of commit a536b06babb6b30385baefe7d3a14092d4613e4c with merge base 5d2a17b29f57ab77f0481ca1d96d827e610dc4bf ():

NEW FAILURES - The following jobs have failed:

* [Build Linux Wheels / pytorch/executorch / upload / manywheel-py3_8-cpu](https://hud.pytorch.org/pr/pytorch/executorch/3466#24487179285) ([gh](https://github.com/pytorch/executorch/actions/runs/8916097489/job/24487179285)) `Unable to find any artifacts for the associated workflow` * [Build M1 Wheels / pytorch/executorch / upload / wheel-py3_8-cpu](https://hud.pytorch.org/pr/pytorch/executorch/3466#24487076075) ([gh](https://github.com/pytorch/executorch/actions/runs/8916097492/job/24487076075)) `Unable to find any artifacts for the associated workflow`

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[dbort]

@dbort has imported this pull request. If you are a Meta employee, you can view this diff on Phabricator.

[facebook-github-bot]

@dbort merged this pull request in pytorch/executorch@9214139d04592fcffd2741be34434bc7c623e890.