Pass ChangeInfo into the suggestion Api

It is useful to know more about the change than just the changeId.
The plugin can request the information about the change using rest-api,
but that seems unnecessary, given that change info is already fetched
and known at that point. (In practice it would probably retrieve the
cached rest api response, but that relies on plugin using exact same
url and requires developers to know about the caching behaviour in core
in the first place).

Google-Bug-Id: b/312228673
Release-Notes: skip
Change-Id: Idac4fe60f6c6243ef018ee2fd2c1186ddeeabc3c

polygerrit-ui/app/elements/shared/gr-comment/gr-comment.ts

diff --git a/polygerrit-ui/app/elements/shared/gr-comment/gr-comment.ts b/polygerrit-ui/app/elements/shared/gr-comment/gr-comment.ts
index 7c893f2..ca74529 100644
--- a/polygerrit-ui/app/elements/shared/gr-comment/gr-comment.ts
+++ b/polygerrit-ui/app/elements/shared/gr-comment/gr-comment.ts
@@ -63,7 +63,7 @@
 import {Subject} from 'rxjs';
 import {debounceTime} from 'rxjs/operators';
 import {changeModelToken} from '../../../models/change/change-model';
-import {isBase64FileContent} from '../../../api/rest-api';
+import {ChangeInfo, isBase64FileContent} from '../../../api/rest-api';
 import {createDiffUrl} from '../../../models/views/change';
 import {userModelToken} from '../../../models/user/user-model';
 import {modalStyles} from '../../../styles/gr-modal-styles';
@@ -1094,10 +1094,12 @@
 
   private async generateSuggestEdit() {
     const suggestionsProvider = this.suggestionsProvider;
+    const changeInfo = this.getChangeModel().getChange();
     if (
       !suggestionsProvider ||
       !this.showGeneratedSuggestion() ||
       !this.changeNum ||
+      !changeInfo ||
       !this.comment ||
       !this.comment.patch_set ||
       !this.comment.path ||
@@ -1112,6 +1114,7 @@
     const suggestionResponse = await suggestionsProvider.suggestCode({
       prompt: this.messageText,
       changeNumber: this.changeNum,
+      changeInfo: changeInfo as ChangeInfo,
       patchsetNumber: this.comment?.patch_set,
       filePath: this.comment.path,
       range: this.comment.range,