fix(approve): support partial approves in Safe eth flow

[shoom3301]

Summary

Fixes https://www.notion.so/cownation/Add-partial-approval-to-the-ETH-flow-in-Safe-28a8da5f04ca80298779d1530db170e0?v=2578da5f04ca81c385e6000cca94fa88&source=copy_link

To Test

1. When selling ETH in Safe, it should do a bundle with Wrap, Approve, and Swap.
2. Approve should be wired up with partial approval logic.

[vercel]

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Project	Deployment	Preview	Updated (UTC)
cowfi	Ready	Preview	Oct 24, 2025 2:42pm
explorer-dev	Ready	Preview	Oct 24, 2025 2:42pm
swap-dev	Ready	Preview	Oct 24, 2025 2:42pm
widget-configurator	Ready	Preview	Oct 24, 2025 2:42pm

2 Skipped Deployments

Project	Deployment	Preview	Updated (UTC)
cosmos	Ignored		Oct 24, 2025 2:42pm
sdk-tools	Ignored	Preview	Oct 24, 2025 2:42pm

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✨ Finishing touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch feat/safe-partial-approvals-eth-flow

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[elena-zh]

Thank you!