Fix: Lazy Loading images

[pyronaur]

Fixes #22542

Sync Jetpack and Jetpack Boost lazy image status so that toggles in both dashboards always reflect the current status.

Modified the logic slightly. Because Jetpack is watching for filters and reflecting that to the dashboard, I decided to just use Jetpack plugin as the single source of truth instead of Jetpack Boost for the lazy images setting.

Does this pull request change what data or activity we track or use?
No

Testing instructions:
Run E2E Tests

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Boost plugin:

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[thingalon]

Minor thing to fix, but otherwise looks good. Hadn't thought of using a compatibility module. That's not a bad idea.

Don't forget to use the full Jetpack Monorepo PR template, to assure the gardening and labelling system you've thought about its questions.

[thingalon]

imasges

[pyronaur]

derp 🤪

[thingalon]

Let's do it.