Picker multi select support - Override throttle time (#894)

* pass dialog events to picker custom model to support multi-selection

* refactor code to make label text decision more intuitive

* Made label source selection more intuitive

* changed test uut function to match new logic -[failed tests]

* fixed eslint issue

* PickerItem throttle time set to 0, to avoid selection-delay behaviour

Co-authored-by: Ethan Sharabi <[email protected]>

Author: mendyEdri

src/components/picker/PickerItem.js

@@ -131,6 +131,7 @@ class PickerItem extends BaseComponent {
         onLayout={isSelected ? this.onSelectedLayout : undefined}
         disabled={disabled}
         testID={testID}
+        throttleTime={0}
         {...this.extractAccessibilityProps()}
       >
         {renderItem ? renderItem(value, this.props, this.getLabel()) : this.renderItem()}