Fix: delay chainChanged event in test wallet

[katspaugh]

What it solves

Onboard cannot subscribe to the chainChanged event if it's emitted synchronously right after connecting.
Giving it a small delay allows onboard to subscribe to this event and fetch an ENS name and account balance of the connected address.

[github-actions]

Branch preview

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Website:
https://test_wallet--walletweb.review.5afe.dev/home?safe=eth:0xA77DE01e157f9f57C7c4A326eeE9C4874D0598b6

Storybook:
https://test_wallet--walletweb.review.5afe.dev/storybook/

[github-actions]

ESLint Summary View Full Report

Annotations are provided inline on the Files Changed tab. You can also see all annotations that were generated on the annotations page.

Type	Occurrences	Fixable
Errors	0	0
Warnings	0	0
Ignored	0	N/A

• Result: ✅ success
• Annotations: 0 total

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^{Report generated by eslint-plus-action}

[github-actions]

📦 Next.js Bundle Analysis for safe-wallet-web

This analysis was generated by the Next.js Bundle Analysis action. 🤖

🎉 Global Bundle Size Decreased

Page	Size (compressed)
global	1003.8 KB (-19 B)

Details

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[github-actions]

Coverage report

St.❔	Category	Percentage	Covered / Total
🟡	Statements	79.15% (+0.02% 🔼)	11592/14645
🔴	Branches	58.41% (+0.01% 🔼)	2810/4811
🟡	Functions	66.07% (-0.02% 🔻)	1856/2809
🟢	Lines	80.48% (+0.02% 🔼)	10450/12984

Test suite run success

1446 tests passing in 199 suites.

Report generated by 🧪jest coverage report action from 3b67c9a