fix(github): guard REST octokit in comment sync to prevent createComment crash (#10692)

Same class of bug fixed in #10442 for graphql calls. The user-scoped
Octokit returned by getOctokit() may lack the .rest plugin, causing
"okit.rest.issues.createComment is not a function". Add ensureRESTOctokit()
guard to both createGithubComment and updateComment paths.

Fixes #10691

Signed-off-by: Yulian Diaz <5605867+spatialy@users.noreply.github.com>

services/github/pod-github/src/sync/comments.ts

@@ -24,7 +24,7 @@ import {
   githubExternalSyncVersion,
   githubSyncVersion
 } from '../types'
-import { collectUpdate, deleteObjects, ensureGraphQLOctokit, errorToObj, getSince, isGHWriteAllowed } from './utils'
+import { collectUpdate, deleteObjects, ensureGraphQLOctokit, ensureRESTOctokit, errorToObj, getSince, isGHWriteAllowed } from './utils'
 
 import { Analytics } from '@hcengineering/analytics'
 import { IssueComment, IssueCommentCreatedEvent, IssueCommentEvent } from '@octokit/webhooks-types'
@@ -353,7 +353,10 @@ export class CommentSyncManager implements DocSyncManager {
 
     if (Object.keys(platformUpdate).length > 0) {
       // Check and update body with external
-      const okit = (await this.provider.getOctokit(ctx, existing.modifiedBy)) ?? container.container.octokit
+      const okit = ensureRESTOctokit(
+        (await this.provider.getOctokit(ctx, existing.modifiedBy)) ?? container.container.octokit,
+        container
+      )
       const mdown = await this.provider.getMarkdown(existingComment.message)
       if (mdown.trim().length > 0) {
         await okit.rest.issues.updateComment({
@@ -426,7 +429,10 @@ export class CommentSyncManager implements DocSyncManager {
       return {}
     }
     const chatMessage = existing as ChatMessage
-    const okit = (await this.provider.getOctokit(ctx, chatMessage.modifiedBy)) ?? container.container.octokit
+    const okit = ensureRESTOctokit(
+      (await this.provider.getOctokit(ctx, chatMessage.modifiedBy)) ?? container.container.octokit,
+      container
+    )
 
     // No external version yet, create it.
     try {