fix(dgw): fix illegal invocation for send method on streaming player websocket proxy

[irvingoujAtDevolution]

Fix the problem when Websocket send is called, we have an illegal invocation exception. The Websocket send method needs to be tied to the Websocket instance instead of the proxy, that is, the this keywords need to be bind to the correct object. This problem was introduced in the previous effort to intercept the close method for Websocket

Changelog: ignore

[github-actions]

Let maintainers know that an action is required on their side

• Add the label release-required Please cut a new release (Devolutions Gateway, Devolutions Agent, Jetsocat, PowerShell module) when you request a maintainer to cut a new release (Devolutions Gateway, Devolutions Agent, Jetsocat, PowerShell module)

• Add the label release-blocker Follow-up is required before cutting a new release if a follow-up is required before cutting a new release

• Add the label publish-required Please publish libraries (`Devolutions.Gateway.Utils`, OpenAPI clients, etc) when you request a maintainer to publish libraries (Devolutions.Gateway.Utils, OpenAPI clients, etc.)

• Add the label publish-blocker Follow-up is required before publishing libraries if a follow-up is required before publishing libraries

[CBenoit]

@irvingoujAtDevolution Add Changelog: ignore at the bottom of your PR description if this fix is for something we didn’t release yet, and merge. Thank you!