Add/fix critical css e2e on interstitial

[haqadn]

Fixes #

Proposed changes:

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[github-actions]

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[github-actions]

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[jp-launch-control]

Code Coverage Summary

Coverage changed in 5 files.

File	Coverage	Δ%	Δ Uncovered
projects/packages/my-jetpack/_inc/components/product-interstitial-modal/product-interstitial-my-jetpack.tsx	0/33 (0.00%)	0.00%	11 💔
projects/plugins/boost/app/assets/src/js/features/upgrade-cta/upgrade-cta.tsx	0/14 (0.00%)	0.00%	3 ❤️‍🩹
projects/plugins/boost/app/assets/src/js/features/error-boundary/error-boundary.tsx	0/9 (0.00%)	0.00%	2 ❤️‍🩹
projects/plugins/boost/app/assets/src/js/features/module/module.tsx	0/29 (0.00%)	0.00%	2 ❤️‍🩹
projects/plugins/boost/app/class-jetpack-boost.php	0/92 (0.00%)	0.00%	1 ❤️‍🩹

1 file is newly checked for coverage.

File	Coverage
projects/plugins/boost/app/assets/src/js/features/upgrade-cta/interstitial-modal-cta.tsx	0/2 (0.00%) 💔

Full summary · PHP report · JS report

_{If appropriate, add one of these labels to override the failing coverage check: Covered by non-unit tests Use to ignore the Code coverage requirement check when E2Es or other non-unit tests cover the code Coverage tests to be added later Use to ignore the Code coverage requirement check when tests will be added in a follow-up PR I don't care about code coverage for this PR Use this label to ignore the check for insufficient code coveage.}

[dilirity]

Closing this as the problem was fixed in the main PR.