[3.13] gh-128014: Fix passing default='' to the tkinter method wm_iconbitmap() (GH-128015) #128418
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(cherry picked from commit 58e9f95)
Co-authored-by: Zhikang Yan [email protected]
Co-authored-by: Serhiy Storchaka [email protected]
tkinter.Wm.wm_iconbitmaphas no effect when passing an empty string to the parameterdefault#128014