BYOM: Model Import Wizard (#6949)

## Summary

Design alignment for the model import wizard.

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-6949-BYOM-Model-Import-Wizard-2b76d73d365081a48632c40430e05c93)
by [Unito](https://www.unito.io)

src/platform/assets/components/AssetBrowserModal.vue

@@ -201,6 +201,12 @@ function handleUploadClick() {
       onUploadSuccess: async () => {
         await execute()
       }
+    },
+    dialogComponentProps: {
+      pt: {
+        header: 'py-0! pl-0!',
+        content: 'p-0!'
+      }
     }
   })
 }