There's a deep beauty in that sentence that probably isn't apparent on the surface. The "popular prejudice" that Dickens was referring to about the Court of Chancery was, in part, that it had ponderously complex proceedings and took forever to get anywhere. So while Dickens did have a very wordy writing style, the embedded asides in that sentence are probably calculated to subconsciously echo the longwinded, circuitous style of the court.