chore: add app name to OnchainKitProvider

[arjun-dureja]

What changed? Why?

• Passed the app name (Base) to OnchainKitProvider
• Without the name, OnchainKit defaults to "Dapp", which doesn't look good in the keys.coinbase.com popup

Notes to reviewers

How has it been tested?

• Manually

Before	After

Have you tested the following pages?

BaseWeb

• base.org
• base.org/names
• base.org/builders
• base.org/ecosystem
• base.org/name/jesse
• base.org/manage-names
• base.org/resources

BaseDocs

• docs.base.org
• docs sub-pages

[vercel]

@arjun-dureja is attempting to deploy a commit to the Coinbase Team on Vercel.

A member of the Team first needs to authorize it.

[cb-heimdall]

✅ Heimdall Review Status

Requirement	Status	More Info
Reviews	✅ 1/1	Denominator calculation Show calculation 1 if user is bot 0 1 if user is external 0 From .codeflow.yml 1 Additional review requirements Show calculation Max 0 0 From CODEOWNERS 0 Global minimum 0 Max 1 1 1 if commit is unverified 0 Sum 1