Fix: use wallet_addEthereumChain if cannot switch chain

[katspaugh]

What it solves

Resolves #3515

How this PR fixes it

If wallet_switchEthereumChain throughs an "Unrecognized chain" error, we'll attempt to add that chain to the wallet.

[github-actions]

Branch preview

✅ Deploy successful!

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

Storybook:
https://switch_chain--walletweb.review-wallet-web.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 Increased

Page	Size (compressed)
global	1006.13 KB (🟡 +184 B)

Details

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Coverage report

St.❔	Category	Percentage	Covered / Total
🟡	Statements	79.07% (-0.04% 🔻)	11215/14184
🔴	Branches	58.55% (-0.01% 🔻)	2653/4531
🟡	Functions	66.07% (-0.02% 🔻)	1807/2735
🟢	Lines	80.34% (-0.05% 🔻)	10104/12577

Show files with reduced coverage 🔻

St.❔	File	Statements	Branches	Functions	Lines
🟡	... / sdk.ts	70.97% (-6.41% 🔻)	42.11% (-2.34% 🔻)	69.23% (-5.77% 🔻)	69.88% (-7.15% 🔻)

Test suite run success

1419 tests passing in 198 suites.

Report generated by 🧪jest coverage report action from a9c8e84

[francovenica]

LGTM

Tested with Cello that was the network that gave me troubles on the first place
Deleted a few networks from the MM extension and add them again by switching to them