RFR: 8331765: Websocket callbacks are not executed after WebKit 617.1 update [v4]

[Jay Bhaskar]

> Issue: The Websocket Channel is broken 
> Solution: The socket Provider needs a web page pointer, since the web socket channel source code is moved to WebkitLegacy in 617.1 for the web process model, it is invalid for JavaFx Webkit.

Jay Bhaskar has updated the pull request incrementally with one additional commit since the last revision:

  Fix typos meesage to message

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Changes:
  - all: https://git.openjdk.org/jfx/pull/1477/files
  - new: https://git.openjdk.org/jfx/pull/1477/files/768b4011..30b8e199

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jfx&pr=1477&range=03
 - incr: https://webrevs.openjdk.org/?repo=jfx&pr=1477&range=02-03

  Stats: 2 lines in 1 file changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jfx/pull/1477.diff
  Fetch: git fetch https://git.openjdk.org/jfx.git pull/1477/head:pull/1477

PR: https://git.openjdk.org/jfx/pull/1477