Support the eth_subscribe method with the "newHeads" param

[ghost]

Description

When i want use the brave wallet on snowtrace, to make a transaction, snowtrace send the transaction to the wallet.
I click on confirm, and after that i have this error :
Failed to subscribe to new newBlockHeaders to confirm the transaction receipts. { "error": { "code": -32601, "message": "the method eth_subscribe does not exist" }, "id": 8, "jsonrpc": "2.0" }

Steps to Reproduce

1. go on https://snowtrace.io/address/
2. find a contract
3. use function on write contract like "approve" : https://snowtrace.io/token/0xd586e7f844cea2f87f50152665bcbc2c279d8d70#writeContract
4. accept the transaction on brave wallet

Actual result:

Failed to subscribe to new newBlockHeaders to confirm the transaction receipts. { "error": { "code": -32601, "message": "the method eth_subscribe does not exist" }, "id": 6, "jsonrpc": "2.0" }

Expected result:

transaction should be accepted

Brave version (brave://version info)

Version 1.35.103 Chromium: 98.0.4758.102 (Official Build) (64-bit)

Version/Channel Information:

• Can you reproduce this issue with the current release?
• yes

[kunal266]

same error with ethglobal.com, I had to use chrome and install metamask to use the same

[vinh-perfectstorm]

same error with brave wallet

[bbondy]

@nvonpentz if you have a chance could you look into what we need here in more detail?

[ghost]

Honestly, without disrespecting you, I have trouble understanding how this little bug can take so long.
And especially why you launched a wallet if we can't use it.
I'm a BAT holder and a brave user since years but honestly it pisses me off. Nobody will use your wallet if it's full of bugs and you take months to fix them.

[srirambv]

Verification passed on

Brave	1.48.141 Chromium: 109.0.5414.119 (Official Build) beta (64-bit)
Revision	772095164c7d5d4e73160f858efed3b5e87eca83-refs/branch-heads/5414@{#1458}
OS	Linux

• Verified steps from brave/brave-core#16318
• Verified eth_subscribe listens to new block head every 20 seconds
• Verified eth_unsubscribe stops listening to events

21350.mp4

---

Verification passed on

Brave	1.48.141 Chromium: 109.0.5414.119 (Official Build) beta (64-bit)
Revision	772095164c7d5d4e73160f858efed3b5e87eca83-refs/branch-heads/5414@{#1458}
OS	Windows 11 Version 22H2 (Build 22621.755)

• Verified steps from brave/brave-core#16318
• Verified eth_subscribe listens to new block head every 20 seconds
• Verified eth_unsubscribe stops listening to events

21350.mp4

---

Verification passed on

Brave	1.48.141 Chromium: 109.0.5414.119 (Official Build) beta (arm64)
Revision	772095164c7d5d4e73160f858efed3b5e87eca83-refs/branch-heads/5414@{#1458}
OS	macOS Version 13.0 (Build 22A380)

• Verified steps from brave/brave-core#16318
• Verified eth_subscribe listens to new block head every 20 seconds
• Verified eth_unsubscribe stops listening to events

21350.mov