…#26590)

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Patch for the core fix: MetaMask/core#8044
https://consensyssoftware.atlassian.net/browse/ASSETS-2796

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CHANGELOG entry: fix: AccountsApiBalanceFetcher stricter zero out
conditions

Fixes: MetaMask/metamask-extension#40324 (this
issue also happens on mobile!) #26618

1. Add avalanche and have avalanche tokens
2. Select avalanche only in the network picker - EXPECTED: see avalanche
erc-20 balances
3. Select popular networks in the network picket - EXPECTED: see
avalanche erc-20 balances

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https://www.loom.com/share/d6e472d2ab444205acdad64507f43eed

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<!-- CURSOR_SUMMARY -->
---

> [!NOTE]
> **Medium Risk**
> Touches cross-chain balance fetching behavior via a patched
dependency; incorrect gating could still cause missing/incorrect
displayed balances for some network selections. Dependency patching adds
some upgrade/maintenance risk but is scoped to a small conditional
change.
>
> **Overview**
> Updates `@metamask/assets-controllers` via a Yarn patch to tighten
when missing balances are backfilled as zero in
`AccountsApiBalanceFetcher`.
>
> Zero-value native and ERC-20 balances are now only synthesized when
the chain was *explicitly requested* (`chainIds.includes(chainId)`) and
is *supported* (`supports(chainId)`), avoiding unintended zeroing for
other chains. The app’s dependency wiring is updated (`package.json` +
`yarn.lock`) to use the patched `@metamask/assets-controllers@100.0.3`.
>
> <sup>Written by [Cursor
Bugbot](https://cursor.com/dashboard?tab=bugbot) for commit
c3c5058. This will update automatically
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[here](https://cursor.com/dashboard?tab=bugbot).</sup>
<!-- /CURSOR_SUMMARY -->