feat: rename PreviewNet dotNS TLD from .test to .testnet

[justraman]

No description provided.

[github-actions]

⚡ Performance Report

⚠️ No baseline found on main. This PR's results are recorded but cannot be compared.
Merge to main to establish a baseline.

[github-actions]

Bundle Size Report

Chunks over 500 KB:

File	Raw	Brotli	Gzip
host/assets/paseo.smol-DboPaEh1.json	1.84 MB	941.7 KB	1019.4 KB
host/assets/paseo-people-next.smol.json	3.36 MB	1.68 MB	1.82 MB
host/assets/smoldot.js	3.05 MB	2.27 MB (+117 B)	2.28 MB
host/assets/smoldot_worker.js	3.02 MB	2.26 MB	2.27 MB
host/assets/truapi_server_bg.wasm	7.18 MB	5.29 MB	5.56 MB
host/assets/wasm/web/truapi_server_bg.wasm	7.18 MB	5.29 MB	5.56 MB
Total	26.77 MB (+28.6 KB)	18.06 MB (+6.8 KB) (-33%)	18.88 MB (+7.6 KB)

All files

File	Raw	Brotli	Gzip
host/.well-known/apple-app-site-association	1.0 KB	1.0 KB	1.0 KB
host/.well-known/assetlinks.json	2.1 KB	343 B	427 B
host/assets/bridge.js	70.3 KB	19.2 KB (-52 B)	22.2 KB (+4 B)
host/assets/browser.js	22.9 KB	7.6 KB (+3 B)	8.6 KB (+2 B)
host/assets/client.js	100.1 KB	29.4 KB (-14 B)	32.4 KB (+3 B)
host/assets/dist.js	39.0 KB	12.9 KB (+19 B)	14.6 KB (+1 B)
host/assets/dotli-debug-bus.js	710 B	710 B	710 B
host/assets/get-sync-provider.js	2.8 KB	1.1 KB (-1 B)	1.2 KB (+2 B)
host/assets/hex.js	154 B	154 B	154 B
host/assets/index.js	225.3 KB (+3 B)	56.4 KB (+7 B)	67.4 KB (+5 B)
host/assets/index.css	55.1 KB	8.6 KB	9.8 KB
host/assets/manifest.js	22.6 KB	7.2 KB (-2 B)	8.0 KB (+1 B)
host/assets/panel.js	76.2 KB	20.6 KB (+40 B)	23.2 KB (+2 B)
host/assets/paseo.smol-DboPaEh1.json	1.84 MB	941.7 KB	1019.4 KB
host/assets/paseo-people-next.smol.json	3.36 MB	1.68 MB	1.82 MB
host/assets/paseo.smol.json	23.4 KB	5.4 KB	6.2 KB
host/assets/previewnet.smol.json	43.8 KB	11.2 KB	9.5 KB
host/assets/resolve.js	156 B	156 B	156 B
host/assets/rpc-resolve.js	2.5 KB	1.0 KB (-7 B)	1.2 KB (+5 B)
host/assets/smoldot.js	3.05 MB	2.27 MB (+117 B)	2.28 MB
host/assets/smoldot_worker.js	3.02 MB	2.26 MB	2.27 MB
host/assets/spans.js	2.6 KB	1.1 KB	1.3 KB
host/assets/src.js	1.8 KB	853 B (-5 B)	946 B (+1 B)
host/assets/styles.css	15.3 KB	3.3 KB	3.8 KB
host/assets/truapi_server_bg.wasm	7.18 MB	5.29 MB	5.56 MB
host/assets/wasm/web/README.md	11.9 KB	11.9 KB	11.9 KB
host/assets/wasm/web/package.json	371 B	371 B	371 B
host/assets/wasm/web/truapi_server.d.ts	11.7 KB	11.7 KB	11.7 KB
host/assets/wasm/web/truapi_server.js	48.8 KB	7.8 KB	9.1 KB
host/assets/wasm/web/truapi_server_bg.wasm	7.18 MB	5.29 MB	5.56 MB
host/assets/wasm/web/truapi_server_bg.wasm.d.ts	4.0 KB	4.0 KB	4.0 KB
host/assets/web.js	17.9 KB	4.5 KB (+3 B)	5.0 KB (+3 B)
host/assets/worker-runtime.js	28.7 KB (+28.6 KB)	6.8 KB (+6.7 KB)	7.7 KB (+7.6 KB)
host/assets/worker-runtime.js	106 B	106 B	106 B
host/assets/ws.js	23.1 KB	7.5 KB (-10 B)	8.2 KB (+1 B)
host/dotli.png	11.5 KB	11.5 KB	11.5 KB
host/favicon.svg	1.8 KB	1.8 KB	1.8 KB
host/host-sw.js	2.7 KB	1.1 KB (+27 B)	1.3 KB (-1 B)
host/icon-192.png	12.5 KB	12.5 KB	12.5 KB
host/icon-512.png	42.8 KB	42.8 KB	42.8 KB
host/index.html	29.1 KB	5.4 KB (+8 B)	6.7 KB (+2 B)
host/manifest.webmanifest	441 B	441 B	441 B
host/workbox.js	14.8 KB	4.6 KB	5.1 KB
sandbox/app-sw.js	9.7 KB	3.2 KB (+4 B)	3.6 KB (+4 B)
sandbox/assets/bitswap-bridge.js	840 B	840 B	840 B
sandbox/assets/fetch.js	3.4 KB	1.2 KB	1.4 KB (+1 B)
sandbox/assets/index.js	120.4 KB (+3 B)	34.3 KB (+9 B)	40.4 KB (+2 B)
sandbox/assets/index.css	55.1 KB	8.6 KB	9.8 KB
sandbox/favicon.svg	1.8 KB	1.8 KB	1.8 KB
sandbox/index.html	1.7 KB	580 B (-4 B)	784 B (-3 B)
Total	26.77 MB (+28.6 KB)	18.06 MB (+6.8 KB) (-33%)	18.88 MB (+7.6 KB)

_{Commit: 2c44a03}

[github-actions]

⚠️ E2E Product suite skipped — Nova signing bot is unavailable.

This is a Nova-side outage and not a dot.li test failure. Re-run
from the Actions tab once the bot recovers.

Logs: https://github.com/paritytech/dotli-community/actions/runs/33501844767

[Cyr06130]

ok