Add svelte dep to TP (#1394)

Author: Adamj1232

packages/transaction-preview/package.json

@@ -85,6 +85,7 @@
     "bowser": "^2.11.0",
     "joi": "^17.6.1",
     "rxjs": "^7.5.2",
+    "svelte": "^3.49.0",
     "svelte-i18n": "^3.3.13"
   }
 }