change icon + fix tests

frontend/src/metabase/reference/databases/FieldSidebar.jsx

@@ -49,7 +49,7 @@ const FieldSidebar = ({
         // <SidebarItem
         //   key={`/auto/dashboard/field/${field.id}`}
         //   href={`/auto/dashboard/field/${field.id}`}
-        //   icon="beaker"
+        //   icon='bolt'
         //   name={t`Generate a dashboard based on this field`}
         // />
       }

frontend/src/metabase/reference/databases/TableSidebar.jsx

@@ -47,7 +47,7 @@ const TableSidebar = ({ database, table, style, className, showXray }) => (
       <SidebarItem
         key={`/auto/dashboard/table/${table.id}`}
         href={`/auto/dashboard/table/${table.id}`}
-        icon="beaker"
+        name="bolt"
         name={t`Generate a dashboard based on this table`}
       />
       {showXray && (

frontend/src/metabase/reference/metrics/MetricSidebar.jsx

@@ -35,7 +35,7 @@ const MetricSidebar = ({ metric, user, style, className }) => (
       <SidebarItem
         key={`/auto/dashboard/metric/${metric.id}`}
         href={`/auto/dashboard/metric/${metric.id}`}
-        icon="beaker"
+        icon="bolt"
         name={t`Generate a dashboard based on this metric`}
       />
       {user &&

frontend/src/metabase/reference/segments/SegmentSidebar.jsx

@@ -41,7 +41,7 @@ const SegmentSidebar = ({ segment, user, style, className }) => (
       <SidebarItem
         key={`/auto/dashboard/segment/${segment.id}`}
         href={`/auto/dashboard/segment/${segment.id}`}
-        icon="beaker"
+        icon="bolt"
         name={t`Create a dashboard based on this segment`}
       />