fix(path): Add IE11 flexbox fix (#3542)

Author: brandonferrua

ui/components/path/base/_index.scss

@@ -694,6 +694,7 @@
   .slds-path__action {
     flex-grow: 1;
     flex-basis: 100%;
+    max-width: 100%; // IE11 flexbox fix - ensure everything stays inside the flex container
     justify-content: space-between;
     align-items: center;
     margin-top: $spacing-medium;