bpo-34275: Make IDLE calltips always visible on Mac. (GH-8639)

bpo-34275: Make IDLE calltips always visible on Mac. (GH-8639) · python/cpython@9beaef6

Original file line number	Diff line number	Diff line change
`@@ -72,6 +72,7 @@ def showtip(self, text, parenleft, parenright):`
`72`	`72`	`background="#ffffe0", relief=SOLID, borderwidth=1,`
`73`	`73`	`font = self.widget['font'])`
`74`	`74`	`self.label.pack()`
	`75`	`+tw.update_idletasks()`
`75`	`76`	`tw.lift() # work around bug in Tk 8.5.18+ (issue #24570)`
`76`	`77`
`77`	`78`	`self.checkhideid = self.widget.bind(CHECKHIDE_VIRTUAL_EVENT_NAME,`