Up testing packet size

If we need to (e.g. after EC fiber test) here is the line to change:

https://github.com/codeforUV/ruralnetv2/blob/main/src/routes/test/garbage.json/%2Bserver.js#L34

We should be able to simply do:

`randomBytes(1048576)` -> `randomBytes(1048576 * 2)`

Open src/routes/test/garbage.json/+server.js at line 34 and review how the testing packet is generated. Update the packet-size expression as described, then run the relevant test flow, including the EC fiber test if available, to confirm the larger packet is produced successfully.

Written by the indexing model from the issue text.