Merge pull request #15140 from vorbrodt/group-diagram-moves-on-its-own

Make diagram scale to viewport without growing on its own

.changeset/thick-stingrays-smile.md

@@ -0,0 +1,5 @@
+---
+'@backstage/plugin-explore': patch
+---
+
+Makes the `GroupsDiagram` not grown on screen on its own.

plugins/explore/src/components/GroupsExplorerContent/GroupsDiagram.tsx

@@ -44,8 +44,10 @@ import useAsync from 'react-use/lib/useAsync';
 const useStyles = makeStyles((theme: BackstageTheme) => ({
   graph: {
     minHeight: '100%',
+    flex: 1,
   },
   graphWrapper: {
+    display: 'flex',
     height: '100%',
   },
   organizationNode: {