In the authentic sources, there is no 
sign after 
in bar 235. It is probably an oversight, quite frequent at the end of a page (bar 236 is the last one on the page in A). The moment of pedal release was specified in EE, which, however, is almost certainly a routine revision. According to us, a different scenario is also possible: the sign in bar 237 was written in A by mistake, without taking into account the context of the previous bars, based on the same chord. Performing bars 235-237 with one pedal sounds natural and is compatible with the 
signs, improving the ascending and descending shape of the figuration in the R.H. Due to this reason, in the main text we leave the inclusion of pedal change at the beginning of bar 237 to the discretion of the performer.
Compare the passage in the sources»
category imprint: Differences between sources; Editorial revisions
issues: EE revisions, No pedal release mark
notation: Pedalling