Get rid of usages of the old Button

Signed-off-by: Fredrik Adelöw <freben@gmail.com>

plugins/explore/src/components/DomainCard/DomainCard.tsx

@@ -31,7 +31,7 @@ import {
 } from '@material-ui/core';
 import React from 'react';
 
-import { Button, ItemCardHeader } from '@backstage/core-components';
+import { LinkButton, ItemCardHeader } from '@backstage/core-components';
 import { useRouteRef } from '@backstage/core-plugin-api';
 
 /** @public */
@@ -66,9 +66,9 @@ export const DomainCard = (props: { entity: DomainEntity }) => {
         {entity.metadata.description}
       </CardContent>
       <CardActions>
-        <Button to={url} color="primary">
+        <LinkButton to={url} color="primary">
           Explore
-        </Button>
+        </LinkButton>
       </CardActions>
     </Card>
   );

plugins/explore/src/components/ToolCard/ToolCard.tsx

@@ -26,7 +26,7 @@ import {
   makeStyles,
   Typography,
 } from '@material-ui/core';
-import { Button } from '@backstage/core-components';
+import { LinkButton } from '@backstage/core-components';
 import classNames from 'classnames';
 import React from 'react';
 
@@ -97,9 +97,9 @@ export const ToolCard = ({ card, objectFit }: Props) => {
         )}
       </CardContent>
       <CardActions>
-        <Button color="primary" to={url} disabled={!url}>
+        <LinkButton color="primary" to={url} disabled={!url}>
           Explore
-        </Button>
+        </LinkButton>
       </CardActions>
     </Card>
   );