Fix: Use minHeight.

Temporary change: Prevent TextFile from loading large content.
Fixes #1: File preview failing with JSON files.
Add a way to open text files in new tab.

src/components/common/messaging/attachments/AttachmentActions.tsx

@@ -100,6 +100,14 @@ export default function AttachmentActions({ attachment }: Props) {
                     <File size={24} className={styles.iconType} />
                     <span className={styles.filename}>{filename}</span>
                     <span className={styles.filesize}>{filesize}</span>
+                    { metadata.type === 'Text' && <a
+                        href={open_url}
+                        target="_blank"
+                        className={styles.externalType}>
+                        <IconButton>
+                            <LinkExternal size={24} />
+                        </IconButton>
+                    </a> }
                     <a
                         href={download_url}
                         className={styles.downloadIcon}