Fix: Fixed the issue where the height of the chat page shared externally did not fill the window #7460 (#7682)

### What problem does this PR solve?
Fix: Fixed the issue where the height of the chat page shared externally
did not fill the window #7460
### Type of change


- [x] New Feature (non-breaking change which adds functionality)

web/src/pages/chat/share/index.less

@@ -1,5 +1,5 @@
 .chatWrapper {
-  height: 100%;
+  height: 100vh;
 }
 
 .chatContainer {