fix(explorer): display OUSD as Open USD in token list

[decofe]

Summary

The explorer token list currently renders OUSD as OpenUSD, matching the raw API metadata rather than the requested display name Open USD.

Apply a display-name override only to OUSD at 0x20c0000000000000000000006a37da5c996874be on Tempo mainnet. Match the address case-insensitively, preserve all other token names, and leave symbols and on-chain metadata unchanged. The server response supplies the corrected name to both desktop and mobile token lists.

Validation

• Four regression tests cover the mainnet display name, address casing, other chains, and other tokens with the same raw name.
• Explorer node suite: 291 passed, one skipped.
• Explorer Worker suite: 205 passed.
• Repository lint, type checks, and pre-commit hooks pass.
• Confirmed OpenUSD on the live mainnet token list, page 3.
• Local end-to-end browser verification is blocked: the explorer returns HTTP 500 because RPC credentials are not configured. No deployment is performed by this PR.

Screenshots

Before (verified on live mainnet)	After (expected; browser verification pending)
OUSD row name: OpenUSD	OUSD row name: Open USD

The live before screenshot was captured, but GitHub media upload rejects the sandbox's authentication type. An after screenshot is unavailable because the local explorer lacks RPC credentials.

Prompted by: @alexrisch

[github-actions]

Bundle Size Report

Metric	Size	Δ Change
Total	17.4 MB	+13.1 MB (+309.9%)
Gzip	3.9 MB	+2.7 MB (+219.8%)
Brotli	3.3 MB	+2.2 MB (+209.6%)

Chunk changes (>1KB)

Chunk	Change
assets/chains.js (removed)	-360.7 KB
assets/tempo-queries.js	-301.0 KB
assets/core.js (removed)	-189.5 KB
assets/export-rate-limit.js (removed)	-177.3 KB
assets/engine-javascript.js (removed)	-92.9 KB
assets/decodeAbiParameters.js (removed)	-71.7 KB
assets/_hash.js	-36.1 KB
assets/react.js	-31.8 KB
assets/AbiItem.js (removed)	-27.1 KB
assets/sha2.js (removed)	-14.7 KB
assets/queryOptions.js	-11.8 KB
assets/Bytes.js	-9.6 KB
assets/Amount.js	-9.6 KB
assets/env.js	-9.2 KB
assets/fee-amm-pool-rows.js (removed)	-6.6 KB
assets/DataGrid.js	-5.8 KB
assets/validators.js (removed)	-5.1 KB
assets/token.js	-5.0 KB
assets/Value.js (removed)	-1.0 KB
assets/html-derivative.js (new)	+1.0 KB
...and 356 more

Compared against main branch (baseline from 4/27/2026, 4:02:54 PM)

[github-actions]

Cloudflare Deployments

App	Environment	Status	Preview
explorer	devnet	[OK] Deployed	View Preview
explorer	mainnet	[OK] Deployed	View Preview
explorer	nextfork	[OK] Deployed	View Preview
explorer	testnet	[OK] Deployed	View Preview
explorer	zone-prover	[OK] Deployed	View Preview
fee-payer	devnet	[>>] Skipped	No changes
fee-payer	moderato	[>>] Skipped	No changes
og	-	[>>] Skipped	No changes
reth-snapshots-viewer	-	[>>] Skipped	No changes
tempo-snapshots-viewer	-	[>>] Skipped	No changes
tokenlist	-	[>>] Skipped	No changes