[cupertino_ui] NoDefaultCupertinoThemeData == and hashCode ignore selectionHandleColor #195391

Steps to reproduce

const red = NoDefaultCupertinoThemeData(selectionHandleColor: CupertinoColors.systemRed);
const blue = NoDefaultCupertinoThemeData(selectionHandleColor: CupertinoColors.systemBlue);
print(red == blue); // true

Expected results

false. The two themes have different selection handle colors. CupertinoThemeData already compares and hashes selectionHandleColor.

Actual results

true, because NoDefaultCupertinoThemeData.operator == and hashCode leave out selectionHandleColor.

Material's ThemeData.cupertinoOverrideTheme is typed NoDefaultCupertinoThemeData?, and ThemeData == compares it. So an app that passes a NoDefaultCupertinoThemeData there and changes only its selectionHandleColor produces a ThemeData that compares equal to the old one, and widgets that depend on the theme aren't rebuilt with the new handle color. (Passing a CupertinoThemeData isn't affected, since it overrides ==.)

Package version

cupertino_ui 1.1.4 (main as of today)