feat(progress): enhance progress tooltip and hover effects

- Updated the progress tooltip to display the current time or '00:00' when no time is available.
- Improved hover functionality by adding/removing a class on the player element based on the hover state.
- Refactored mousemove event handling to streamline tooltip visibility and highlight display logic.
- Removed unnecessary display property manipulation for the tooltip in CSS.

packages/artplayer/src/style/progress.less

@@ -81,7 +81,6 @@
                 }
 
                 .art-progress-tip {
-                    display: none;
                     position: absolute;
                     z-index: 50;
                     top: -25px;