feat: use WSS instead of HTTPS when listening to events

[kss-t1]

Description

Switch connection the the blockchain node to listen to Open events from HTTP to WS.

Motivation and Context

We had an issue with Base Mainnet node where listening to events over HTTP would occasionally fail due to expired eth_filter . Using WS solves that as it doesn't use filters (it uses eth_subscribe ) . And it is a more suitable solution for that use case anyway.

How Has This Been Tested?

v08 + e2e intent

Types of changes (remove all unchecked types)

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Style (style only changes)
• Docs
• Refactor (code that does not add new functionality nor fixes a bug)

Checklist:

• If my change requires a change to the documentation, I have updated the documentation accordingly, and in either case, have checked this box to attest to my assessment of this requirement with regard to my change.
• If my change requires additions or updates to any deployment scripts to ensure that the protocol is functional (Makefile, Dockerfile, Forge Script, etc.), I have made these changes, and in either case, have checked this box to attest to my assessment of this requirement with regard to my change.
• If my change requires additional test coverage, I have created those tests accordingly, and in either case, have checked this box to attest to my assessment of this requirement with regard to my change.