refactor(dynamic): improve SSA receiver type checks, enhance framework bindings, and expand test coverage

tests/dynamic_fixtures/websocket/ws/benign.js

@@ -1,5 +1,6 @@
 // Phase 21 — `ws` WebSocket benign control.
 const _NYX_ADAPTER_MARKER = "require('ws')";
+const _NYX_WS_MESSAGE_MARKER = "wss.on('connection', ws => ws.on('message', onMessage))";
 
 function onMessage(data) {
     return 'echoed: ' + JSON.stringify(String(data));

tests/dynamic_fixtures/websocket/ws/vuln.js

@@ -4,6 +4,7 @@
 // WebSocketServer instance.  It splices the message bytes into a
 // child-process command — classic WS → cmdi shape.
 const _NYX_ADAPTER_MARKER = "require('ws')";
+const _NYX_WS_MESSAGE_MARKER = "wss.on('connection', ws => ws.on('message', onMessage))";
 
 const { execSync } = require('child_process');