[TIMOB-24574] (6_1_X) iOS: Fix picker-selection

[hansemannn]

JIRA: https://jira.appcelerator.org/browse/TIMOB-24574

[vijaysingh-axway]

-// We're order-dependent on type being set first, so we need to make sure that anything that relies
-// on whether or not this is a date picker needs to be set AFTER the initial configuration.
--(void)setSelectionIndicator_:(id)value
-{

• if (picker == nil) {

•  [[self proxy] replaceValue:value forKey:@"selectionIndicator" notification:NO];
  

• }
• else if ([self isDatePicker]==NO)
• {

•  [(UIPickerView*)[self picker] setShowsSelectionIndicator:[TiUtils boolValue:value]];
  

• }
  -}

Rather deleting the method , we should deprecate it by giving message to developers. What you think?

•    Manually setting the property was deprecated in 6.1.0 and will be ignored by the SDK.
  

This is deprecated in iOS only. So iOS should be mentioned in above line.

[hansemannn]

See notes in the master-PR. Also, please try to format code with

\```objc
Code
\```

(Without the \)

[htbryant94]

Approved! picker selection indicator is now visible. Tested on iOS 10.2 / 9.3 Devices and Simulators.

[hansemannn]

Reverting due to failing unit-tests.