feat: enhanced user experience with layout adjustments.

- This commit addresses key feature enhancements and minor optimizations for improved user experience and functionality.
- Adjusted margin top for upload container to a positive value.
- Adjusted the max-height of the container to improve rendering on smaller screens.

src/renderer/src/pages/home/Messages/MessageAttachments.tsx

@@ -18,7 +18,7 @@ const MessageAttachments: FC<Props> = ({ message }) => {
   }
 
   return (
-    <Container style={{ marginTop: -5 }}>
+    <Container style={{ marginTop: 2 }}>
       <Upload
         listType="picture"
         disabled

src/renderer/src/pages/home/Topics.tsx

@@ -154,7 +154,7 @@ const Container = styled.div`
   flex-direction: column;
   padding-top: 10px;
   overflow-y: scroll;
-  max-height: calc(100vh - var(--navbar-height) - 140px);
+  max-height: calc(100vh - var(--navbar-height) - 50px);
 `
 
 const TopicListItem = styled.div`