AssertionError: 7911 != 7912 in subvertpy while parsing txdeltas

https://sentry.softwareheritage.org/organizations/swh/issues/105086/?referrer=phabricator_plugin

AssertionError: 7911 != 7912
(2 additional frame(s) were not displayed)
...
  File "swh/loader/svn/svn.py", line 559, in swh_hash_data_per_revision
    objects = self.swhreplay.compute_objects(rev, low_water_mark)
  File "swh/loader/svn/replay.py", line 995, in compute_objects
    self.replay(rev, low_water_mark)
  File "swh/loader/svn/replay.py", line 977, in replay
    self.conn.replay(rev, low_water_mark, self.editor)
  File "swh/loader/svn/replay.py", line 104, in apply_window
    patch = delta.apply_txdelta_window(sbuf, window)
  File "subvertpy/delta.py", line 53, in apply_txdelta_window
    raise AssertionError("%d != %d" % (len(tview), tview_len))

7911 != 7912

while loading https://svn.code.sf.net/p/codeblocks/code

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Migrated from T4673 (view on Phabricator)