feat(web-console): change upload.tsx wording to clarify how to enable copy

[smv1256]

This explicitly clarifies where to refer to enable COPY, per issue #286.

when CSV root is not set then webconsole shows this note:

It should also hint how to enable it. chances are the link behind COPY SQL shows that, but the note should be explicit about it. something to indicate "here is how you fix it". Perhaps something like a link with words "Enable it" would do the trick.

[CLAassistant]

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