feat: Added authenticatedUser and effectiveUser to serializeRefreshToken (#258)

DH-20880: serializeRefreshToken needs to include authenticatedUser and
effectiveUser

### Testing
- I tested this against `colin-gplus-grpc-envoy` BHS which has latest
grpc changes
```json
{
  "url": "https://colin-gplus-grpc-envoy.int.illumon.com:8000/",
  "experimentalWorkerConfig": {
    "heapSize": 0.5
  }
}
```
- I verified that creating a connection can create a core+ worker and
run a query against it

Author: bmingles

src/shared/types.d.ts

@@ -17,7 +17,9 @@ export interface ExternalThemeData {
 export type SerializableRefreshToken = Brand<
   'SerializableRefreshToken',
   {
+    authenticatedUser?: string;
     bytes: string;
+    effectiveUser?: string;
     expiry: number;
   }
 >;

src/util/dataUtils.spec.ts

@@ -27,10 +27,22 @@ describe('parseSamlScopes', () => {
 });
 
 describe('serializeRefreshToken', () => {
-  const mockRefreshToken: DhType.RefreshToken = {
+  const mockRefreshToken: DhType.RefreshToken & {
+    // TODO: Once the types changes made by DH-17975 have been published, we
+    // should be able to update @deephaven-enterprise/jsapi-types and use
+    // the proper RefreshToken type there and get rid of this augmentation.
+    authenticatedUser?: string;
+    effectiveUser?: string;
+  } = {
+    get authenticatedUser() {
+      return 'mockAuthenticatedUser';
+    },
     get bytes() {
       return 'mockBytes';
     },
+    get effectiveUser() {
+      return 'mockEffectiveUser';
+    },
     get expiry() {
       return 1234567890;
     },
@@ -45,7 +57,9 @@ describe('serializeRefreshToken', () => {
         expect(result).toBeNull();
       } else {
         expect(result).toEqual({
+          authenticatedUser: mockRefreshToken.authenticatedUser,
           bytes: mockRefreshToken.bytes,
+          effectiveUser: mockRefreshToken.effectiveUser,
           expiry: mockRefreshToken.expiry,
         });
       }

src/util/dataUtils.ts

@@ -144,15 +144,25 @@ export function parseSamlScopes(scopes: readonly string[]): {
  * @returns The serialized refresh token.
  */
 export function serializeRefreshToken(
-  refreshToken?: DhcType.RefreshToken | null
+  refreshToken?:
+    | (DhcType.RefreshToken & {
+        // TODO: Once the types changes made by DH-17975 have been published, we
+        // should be able to update @deephaven-enterprise/jsapi-types and use
+        // the proper RefreshToken type there and get rid of this augmentation.
+        authenticatedUser?: string;
+        effectiveUser?: string;
+      })
+    | null
 ): SerializableRefreshToken | null {
   if (refreshToken == null) {
     return null;
   }
 
-  const { bytes, expiry } = refreshToken;
+  const { authenticatedUser, bytes, effectiveUser, expiry } = refreshToken;
 
   return {
+    effectiveUser,
+    authenticatedUser,
     bytes,
     expiry,
   } as SerializableRefreshToken;