okx: move WsResponseMultiplexer to setDefaults

[junnplus]

PR Description

The WsResponseMultiplexer structure should be initialized in setDefaults method.

Type of change

Please delete options that are not relevant and add an x in [] as item is complete.

• 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)
• This change requires a documentation update

How has this been tested

Please describe the tests that you ran to verify your changes. Provide instructions so we can reproduce. Please also list any relevant details for your test configuration and
also consider improving test coverage whilst working on a certain feature or package.

• go test ./... -race
• golangci-lint run
• Test X

Checklist

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation and regenerated documentation via the documentation tool
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally and on Github Actions with my changes
• Any dependent changes have been merged and published in downstream modules

[shazbert]

Changes ACK. I am going to be removing this multiplexer when I get a chance to rebase from this PR FYI. If you would like this as a priority let me know @junnplus ?

[junnplus]

@shazbert Thanks for the update. I see that your PR might not be merged soon. If possible, I’d like my changes to be allowed first, as I prefer not to rely on the Setup method to start the exchange.

[shazbert]

@shazbert Thanks for the update. I see that your PR might not be merged soon. If possible, I’d like my changes to be allowed first, as I prefer not to rely on the Setup method to start the exchange.

Yeah, this will be merged first 👍 if you would like the other PR merged as a priority let me know and I can undertake a rebase later this week.

[gbjk]

Looks good 👍

[thrasher-]

@junnplus confirming that this will be merged first 👍