fix: Adjust file upload and navbar styling for cross-platform compatibility

- Update Dragger component to use customRequest for file uploads
- Add Windows-specific padding adjustment for navbar right section

src/renderer/src/pages/knowledge/KnowledgeContent.tsx

@@ -243,7 +243,7 @@ const KnowledgeContent: FC<KnowledgeContentProps> = ({ selectedBase }) => {
         </TitleWrapper>
         <Dragger
           showUploadList={false}
-          onDrop={({ dataTransfer }) => handleDrop([...dataTransfer.files])}
+          customRequest={({ file }) => handleDrop([file as File])}
           multiple={true}
           accept={fileTypes.join(',')}
           style={{ marginTop: 10, background: 'transparent' }}>

src/renderer/src/pages/knowledge/KnowledgePage.tsx

@@ -12,6 +12,7 @@ import { HStack } from '@renderer/components/Layout'
 import ListItem from '@renderer/components/ListItem'
 import PromptPopup from '@renderer/components/Popups/PromptPopup'
 import Scrollbar from '@renderer/components/Scrollbar'
+import { isWindows } from '@renderer/config/constant'
 import { useKnowledgeBases } from '@renderer/hooks/useKnowledge'
 import { useShortcut } from '@renderer/hooks/useShortcuts'
 import { NavbarIcon } from '@renderer/pages/home/Navbar'
@@ -253,7 +254,7 @@ const NarrowIcon = styled(NavbarIcon)`
 
 const NavbarRight = styled(NavbarRightFromComponents)`
   min-width: auto;
-  padding-right: 140px;
+  padding-right: ${isWindows ? '140px' : 15};
 `
 
 export default KnowledgePage