fix: improve regex pattern for terminal command tags

- Change regex from (.*?) to ([\s\S]*?) to properly handle multiline content
- This should fix the issue where <run_terminal_cmd> tags appear as literal text
- Terminal commands should now be parsed correctly and not displayed in chat UI

Author: SFARPak

dyad/src/components/chat/DyadMarkdownParser.tsx

@@ -200,7 +200,7 @@ function parseCustomTags(content: string): ContentPiece[] {
   ];
 
   const tagPattern = new RegExp(
-    `<(${customTagNames.join("|")})\\s*([^>]*)>(.*?)<\\/\\1>`,
+    `<(${customTagNames.join("|")})\\s*([^>]*)>([\\s\\S]*?)<\\/\\1>`,
     "gs",
   );