Hide upload button when state is recovered if hideUploadButton is true

[maddy-jo]

This is a draft of a change for the behavior documented in this community forum post. When Golden Retriever is used, recovered state overrides the user-supplied option for hideUploadButton; this change makes the status bar not render the button if state has been recovered.

There may be a bit of styling changes required if the direction of this PR is acceptable. If the button is not rendered and the progress bar has display: none, the container is still not hidden and has the same height as if it had contents.

Alternatively, I understand if the current behavior is intended and developers are responsible for hiding the button and container via our own CSS. That seems perfectly reasonable.

I will be unavailable for the next week but appreciate any feedback on this PR. Thank you!

[lakesare]

Oh just stumbled upon this PR - I'm fixing exactly this issue in the following PR: #5350 (not yet merged).
Our changes are quite similar, except I'm also addressing the container height issue you're describing.

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@maddy-jo, thanks for the PR, closing in favour of #5350.