fix(panel): Adjust panel visualization section height when title is hidden

Author: ZeekoZhu

dashboard/src/components/panel/panel-render/panel-render-base.css

@@ -49,9 +49,17 @@
   right: 16px;
 }
 
+.panel-root:not(.panel-root--show-title)
+  .panel-top-right-actions:has(div[id^='panel-addon-slot-'])
+  ~ .panel-viz-section {
+  margin-top: 16px;
+  height: calc(100% - 16px);
+}
+
 .panel-root:not(.panel-root--show-title)
   .panel-top-right-actions:has(div[id^='panel-addon-slot-']:empty)
   ~ .panel-viz-section {
+  margin-top: 0;
   height: 100%;
 }