Bug 2015616 - textbox for the rust component errors details field

[bendk]

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[bendk]

See https://yardstick.mozilla.org/d/sync-errors/sync-error-list?orgId=1&from=now-2w&to=now&timezone=browser&var-application=android&var-channel=nightly&var-error_type=remote-settings-unexpected&var-filter_sql=true&refresh=1h&var-details=WebRequestError for an example of this in action.