fix(client): Fix text encoding polyfill being fed numbers (#1204)

Addressing issue [raised in
discord](https://discord.com/channels/933657521581858818/1231997358133477477)

The `TextEncoderLite` polyfill for the TextEncoder does not coerce its
input to a string, and we force cast numbers with `as string` in the
encoding stage, resulting in the input being encoded as an empty
bytearray.

This does mean that the polyfill does not have the _exact_ same
behaviour as the original (which it should), but the immediate solution
is to respect types and not force cast to a string when it isn't.

.changeset/two-ties-scream.md

@@ -0,0 +1,5 @@
+---
+"electric-sql": patch
+---
+
+Fix TextEncoder polyfill being fed numbers rather than strings and breaking replication of number types

clients/typescript/src/satellite/client.ts

@@ -1410,7 +1410,7 @@ function serializeColumnData(
     case PgBasicType.PG_BYTEA:
       return columnValue as Uint8Array
     default:
-      return typeEncoder.text(columnValue as string)
+      return typeEncoder.text(String(columnValue))
   }
 }