fix(ui5-card): fix styles for slotted images (#3301)

Author: fifoosid

packages/main/src/themes/Card.css

@@ -85,7 +85,7 @@
 	color: var(--sapTile_IconColor);
 }
 
-::slotted(img) {
+::slotted(img[slot="avatar"]) {
 	width: 100%;
 	height: 100%;
 	border-radius: 50%;