refactor(card): update styles further

Author: simeonoff

src/components/card/themes/card.header.base.scss

@@ -17,6 +17,11 @@
     opacity: inherit;
 }
 
+::slotted([slot='thumbnail']),
+::slotted(igc-avatar[slot='thumbnail']) {
+    --ig-size: 1;
+}
+
 header {
     display: flex;
     flex-flow: column nowrap;
@@ -33,8 +38,6 @@ header {
 }
 
 ::slotted([slot='thumbnail']) {
-    --ig-size: 1;
-
     display: flex;
     align-self: flex-start;
     margin-inline-end: rem(16px);

src/components/card/themes/shared/header/card.header.indigo.scss

@@ -6,6 +6,7 @@
     }
 }
 
+::slotted([slot='thumbnail']),
 ::slotted(igc-avatar[slot='thumbnail']) {
     --ig-size: 3;
 }