Allow plugins to specify all props for create comment. (#26152)

* Allow plugins to specificy all props for create comment.

* Types

webapp/channels/src/plugins/exported_create_post.tsx

@@ -4,30 +4,25 @@
 import React from 'react';
 
 import AdvancedCreateComment from 'components/advanced_create_comment';
+import type {Props} from 'components/advanced_create_comment/advanced_create_comment';
 
-import type {PostDraft} from 'types/store/draft';
-
-type Props = {
-    placeholder?: string;
-    onSubmit: (draft: PostDraft) => void;
-}
-
-const ExportedCreatePost = ({placeholder, onSubmit}: Props) => {
+const ExportedCreatePost = (props: Partial<Props>) => {
     const Component = AdvancedCreateComment as any;
 
     return (
         <Component
-            placeholder={placeholder}
+            placeholder={''}
             rootDeleted={false}
             channelId={undefined}
             rootId={undefined}
             latestPostId={undefined}
-            onSubmit={onSubmit}
             onUpdateCommentDraft={() => null}
             updateCommentDraftWithRootId={() => null}
             onMoveHistoryIndexBack={() => null}
             onMoveHistoryIndexForward={() => null}
             onEditLatestPost={() => ({data: true})}
+            isPlugin={true}
+            {...props}
         />
     );
 };