Add support for Polygon to use Blocknative

[evgenyboxer]

Description

The latest release of bnc-sdk adds support for Polygon 🎉

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Other

How should this be tested?

Please provide instructions so we can test. Please also list any relevant details for your test configuration.

• I have tested this locally and indeed I'm getting events from blocknative now

Checklist:

• I have performed a self-review of my own code
• I have commented my code where relevant, particularly in hard-to-understand areas
• My changes generate no new console warnings
• The base of this PR is master if hotfix, develop if not

[linear]

UI-724 Update bnc-sdk to support Polygon

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arbitrum – ./

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[evgenyboxer]

I've also added the other Ethereum testnets along with Polygon

[garethfuller]

@evgenyboxer did we add any Polygon specific logic to compensate for not having blocknative that we should now remove?

[evgenyboxer]

@garethfuller I've scanned the code and it doesn't seem we do anything special for Polygon (except hiding/disabling some features).

Blocknative is mostly used for balance refetching and since everything is going through useEthers - it has a check to not fetch balances since it's going to be fetched via Blocknative - so all good on Polygon side.