Fix position of org follow button (go-gitea#25688) (go-gitea#25692)

Backport go-gitea#25688 by @silverwind

This has recently regressed it seems. Put it back into same position as
go-gitea#24345.

Before:
<img width="1246" alt="image"
src="https://github.com/go-gitea/gitea/assets/115237/bb410c29-5539-4dad-8351-8da8470f7091">

After:
<img width="1236" alt="Screenshot 2023-07-04 at 21 19 13"
src="https://github.com/go-gitea/gitea/assets/115237/072e0e83-defd-484d-8861-33d73fa0e446">

Co-authored-by: silverwind <[email protected]>

web_src/css/org.css

@@ -103,6 +103,7 @@
 
 .organization.profile #org-info {
  overflow-wrap: anywhere;
+ flex: 1;
 }
 
 .organization.profile #org-info .ui.header {