Features available for iframes are not the same as the ide by default

[devinrsmith]

canCopy and canDownloadCsv options are false by default for iframes, as opposed to true by default for the ide. Ideally, there should be parity between the defaults between these use cases.

[devinrsmith]

It looks like this can be worked around by setting a query parameter http://localhost:10000/iframe/table/?name=parquet_table&canDownloadCsv, but I consider this an anti-feature wrt the original intentions (the idea was that the server should control whether or not this is enabled). I think we should get rid of allowing the value to be set by query param (in addition to having the same defaults as ide).