Fix %-interpolation error

[me-and]

9c352d7 (Always pass an exception as first argument of ui.error,
2026-04-01) rearranged some of the arguments to ui.error in
folder/IMAP.py, but while it removed one of the %-interpolation
entries in the string to be interpolated, it didn't remove the argument
in the interpolation tuple. This leads to errors like the below:

  File "offlineimap/folder/IMAP.py", line 863, in _fetch_from_imap
    "While fetching msg %r in folder %r."
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    " Query: %s Retrying (%d/%d)" % (
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~
        e, uids, self.name, query,
        ~~~~~~~~~~~~~~~~~~~~~~~~~~
        retry_num - fails_left, retry_num))
        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
TypeError: %d format: a real number is required, not str

Remove the argument from the interpolation tuple that has now been
removed from the string, so the tuple parameters and string contents
match again.

Signed-off-by: Adam Dinwoodie adam@dinwoodie.org

This PR

• I've read the DCO.
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• The relevant informations about the changes stands in the commit message, not here in the message of the pull request.
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• Code is tested (provide details).

Additional information

Tested by applying the patch and re-running. I now get the expected error message:

ERROR: While fetching msg '15788' in folder 'To/PD'. Query: (X-GM-LABELS BODY.PEEK[]) Retrying (1/2)