py/objdeque.c: correct type flags based on option settings

[dhalbert]

This fixes a minor issue in the changes made by #10724. The type flags for deque were meant to be conditionalized based on MICROPY_PY_COLLECTIONS_DEQUE_ITER, but the computed conditionalized value wasn't used.

Discovered by accident while addressing adafruit#9355. @SAK917 recently added #10724 to CircuitPython via adafruit#9065.

@LordFlashmeow can you confirm this is what you wanted?

[github-actions]

Code size report:

   bare-arm:    +0 +0.000% 
minimal x86:    +0 +0.000% 
   unix x64:    +0 +0.000% standard
      stm32:    +0 +0.000% PYBV10
     mimxrt:    +0 +0.000% TEENSY40
        rp2:    +0 +0.000% RPI_PICO_W
       samd:    +0 +0.000% ADAFRUIT_ITSYBITSY_M4_EXPRESS

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 98.42%. Comparing base (88513d1) to head (ea30af3).

Additional details and impacted files

@@           Coverage Diff           @@
##           master   #15316   +/-   ##
=======================================
  Coverage   98.42%   98.42%           
=======================================
  Files         161      161           
  Lines       21204    21204           
=======================================
  Hits        20870    20870           
  Misses        334      334           

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[dhalbert]

I'm puzzled by the CI failure here: https://github.com/micropython/micropython/actions/runs/9597460366/job/26466587697?pr=15316#step:4:996. Maybe it's something intermittent.

[dpgeorge]

Thanks for the fix, rebased and merged in 5040b13

(yes the CI is a bit flaky sometimes...)

[dpgeorge]

See follow up in #15324.