Send contextJson to client SSE

Author: roncohen

packages/browser-sdk/src/sse.ts

@@ -137,7 +137,7 @@ export class AblySSEChannel {
       }
       const serializedContext = canonicalContextJSONStringify(this.context);
       if (serializedContext) {
-        url.searchParams.append("context", serializedContext);
+        url.searchParams.append("contextJson", serializedContext);
       }
 
       this.eventSource = this.createEventSource(url.toString()) ?? null;

packages/browser-sdk/test/sse.test.ts

@@ -110,9 +110,10 @@ describe("connection handling", () => {
     });
 
     const url = new URL(vi.mocked(window.EventSource).mock.calls[0][0]);
-    expect(url.searchParams.get("context")).toBe(
+    expect(url.searchParams.get("contextJson")).toBe(
       JSON.stringify({ user: { id: 23 } }),
     );
+    expect(url.searchParams.has("context")).toBe(false);
   });
 
   test("enables EventSource credentials when credentials is include", async () => {