fix(styles): use individual transform properties in popover animation

The ds-popover-in keyframe was using the `transform` shorthand which
overrides inline style transforms used for boundary-shift correction,
causing popovers (e.g. sidebar sort menu) to clip off-screen. Switch to
individual `translate` and `scale` properties which compose with
`transform` instead of overriding it.

Author: bilalbayram

src/styles/ds-popover.css

@@ -62,10 +62,12 @@
 @keyframes ds-popover-in {
   from {
     opacity: 0;
-    transform: translateY(-4px) scale(0.98);
+    translate: 0 -4px;
+    scale: 0.98;
   }
   to {
     opacity: 1;
-    transform: translateY(0) scale(1);
+    translate: 0 0;
+    scale: 1;
   }
 }