Move fenix to the full megazord. Fixes #1466 [ci full]

[thomcc]

I think this is all we'd need to do.

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[rfk]

Boom mozilla-mobile/fenix#8742

[ekager]

FWIW I think FxR is also using the fenix-megazord so let's make sure they're updated to the full too :)
https://github.com/MozillaReality/FirefoxReality/blob/a81f0f08e8e4825dade804fcfc8ab30350ba038b/versions.gradle#L84

[rfk]

Thanks for the heads-up @ekager, I've made a start on a patch here: MozillaReality/FirefoxReality#2867

[rfk]

r- this so we don't forget to add a changelog entry

[rfk]

👍 let's do this thing!