[Cabal] Add iUSD and Delta Neutral INIT vault TVL

[speedrunner-cabal]

This is an update to an existing adapter (not a new listing), so the template fields don't apply. Here's a PR note:

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Update Cabal adapter: add iUSD and Delta Neutral INIT vault TVL

Extends the existing Cabal adapter to include TVL from two EVM vaults deployed on the cabal-1 L2 chain.

What changed:

• Added Cabal iUSD vault (0x5Eb1A2e8218a0140151ce3445A3799d6C4433f46) — users deposit iUSD to earn optimized stablecoin yield
• Added Delta Neutral INIT vault (0x69fdf919612Ef40e89e56282C6891aca41640204) — delta-neutral strategy on iUSD

Implementation notes:

• Both vaults implement ERC4626 standard; TVL is fetched via totalAssets() on the cabal-1 EVM JSON-RPC endpoint
• cabal-1 is not in DefiLlama's chain registry, so api.addUSDValue() is used for EVM vault TVL (iUSD is a $1 stablecoin)
• Promise.allSettled is used so a failure in one RPC source doesn't suppress TVL from the others
• misrepresentedTokens: true set accordingly

Verified via:
node test.js projects/cabal/index.js

Results:

Building prices get queries for 3 tokens
--- initia ---
USDT                      889.46 k
USDC-INIT                 581.62 k
INIT                      379.21 k
Total: 1.85 M 

--- tvl ---
USDT                      889.46 k
USDC-INIT                 581.62 k
INIT                      379.20 k
Total: 1.85 M 

------ TVL ------
initia                    1.85 M

total                    1.85 M 

[llamabutler]

The adapter at projects/cabal exports TVL:

initia                    1.85 M

total                    1.85 M