fix(tag): ensure tag keeps pill shape with single character (#5053)

Author: tw15egan

packages/components/src/components/tag/_tag.scss

@@ -21,9 +21,11 @@
 
     display: inline-flex;
     align-items: center;
+    justify-content: center;
     padding: 0 $carbon--spacing-03;
     height: 1.5rem;
     max-width: 100%; // restricts size of contained elements
+    min-width: rem(32px); // ensures tag stays pill shaped;
     margin: $carbon--spacing-02;
     border-radius: rem(15px);