Sites 17283 registry extensions (#55)

* Update useExtensions.test.tsx

* added build phase in workflow

* Update useExtensions.test.tsx with host mock

* v0.8.6

* Reverted repo name to Adobe

* Added handling for extension registry extension filtering

* Added test case

* Added autogenerated docs

* added repo name change to test workflow

* restored repo name change made to test workflow

* removed automock jest config param

* update re-generated package-lock file

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