Make event name helper and use it on tooltip & popover to reduce dist sizes (#35856)

* feat: create eventName getter function in baseComponent

* refactor: use `eventName` getter on tooltip & popover

js/tests/unit/tooltip.spec.js

@@ -42,12 +42,6 @@ describe('Tooltip', () => {
     })
   })
 
-  describe('Event', () => {
-    it('should return plugin events', () => {
-      expect(Tooltip.Event).toEqual(jasmine.any(Object))
-    })
-  })
-
   describe('EVENT_KEY', () => {
     it('should return plugin event key', () => {
       expect(Tooltip.EVENT_KEY).toEqual('.bs.tooltip')