[FIX] event.target in _dropdownTap fixed to px-dropdown and drop down…

[gotoashishgupta]

… selected item corrected

Pull Request

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Thanks for helping us improve the Predix UI platform by submitting a Pull Request.

To help us merge your Pull Request as fast as possible, please fill out the following sections:

• A description of the changes proposed in the pull request:

  1. event.target in _dropdownTap is was pointing to px-breadcrumbs component instead of px-dropdown, which is a fix proposed in this pull request.
  2. dropdown selected item even.target.selected can give null but event.detail[evt.target.selectBy] gives correct dropdown selected item in breadcrumb.

• A reference to a related issue (if applicable):

• @mentions of the person or team responsible for reviewing proposed changes:

• working tests:

  The tests need to be functional tests, written for the wct framework, and placed in the test folder, following our testing guidelines.

[randyaskin]

15 is a cleaner approach to this issue, David is merging now.