[TestCase] Check the UI for JSON Form widget

[yatinappsmith]

Steps

Step1. Verify the widget can be added to canvas
Step2. Verify the icon, name and size of the widget
Step3. Verif icon and name of the widget on Entity Explorer
Step4. Verify the widget default name is approperiate
Step5. Verify the widget have default source code every time it added to canvas
Step6. Verify clicking on widget displays Property pane
Step7. Verify default options present in Property Pane
Step8. Verify for tooltips in Property Pane

Expected behaviour