Make BackToTop an explicit export from source-react-components

[i-hardy]

What is the purpose of this change?

This fixes an issue with importing the BackToTop component in the dev kitchen FooterWithContents component.

What does this change?

• Make BackToTop an explicit export of @guardian/source-react-components
• Import it directly from the package in FooterWithContents

[changeset-bot[bot]]

🦋 Changeset detected

Latest commit: e35777200f007fc43809f963fe8a2b8bc8793f86

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 2 packages

Name	Type
@guardian/source-react-components	Minor
@guardian/source-react-components-development-kitchen	Patch

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[sndrs]

as it's a new export, could you add a story for it?

[i-hardy]

Hey @sndrs, if you have some time to take a look at this today I'd really appreciate it, this is becoming a blocker.

[sndrs]

apologies @i-hardy – looks great! thanks for the changes 👍