chores: remove suffix for the main assets

[beer-1]

Note

Medium Risk
Mostly metadata changes, but renaming symbol/recommended_symbol across multiple chains can break downstream integrations that rely on the previous suffix-based identifiers.

Overview
Standardizes asset registry entries across multiple chains by removing .erc20/.op/.ibc suffixes from recommended_symbol for primary assets, while updating several symbol fields (notably IBC variants like INIT.ibc, USDC.ibc, iUSD.ibc) to keep representations distinguishable.

Also removes the deprecated chains/embr-1/chain.json entry, adds the missing iUSD EVM asset to rave-1, and renames Yominet’s wrapped ONYX entry to ONYX.wrapped (including its display name and recommended_symbol).

^{Written by Cursor Bugbot for commit 7ae13d6. This will update automatically on new commits. Configure here.}

[Totalspud]

On echelon-1, removing the suffix, would then leave you with two separate INIT tokens (one OP bridged, one IBC, bridged) with different denoms.
On embrmainnet-1 — INIT, USDC and iUSD each have multiple versions
with different decimals (ERC20 = 18, IBC = 6). Without the suffix creates ambiguity and routing issues.
The other changes look fine

[beer-1]

@Totalspud

I only removed the suffix for one token per asset.

Each asset can still have multiple tokens depending on the bridge method or decimals, but only the official one uses INIT, USDC, and iUSD as the recommended_symbol, while the others keep their suffix.

[cursor]

Cursor Bugbot has reviewed your changes and found 1 potential issue.

^{Bugbot Autofix is OFF. To automatically fix reported issues with cloud agents, enable autofix in the Cursor dashboard.}