(fix): do not show pencil icon if only need to delete

src/app/modules/comments/comment/comment.component.html

src/app/modules/comments/comment/comment.component.ts

src/app/modules/comments/thread/thread.component.html

src/app/modules/comments/thread/thread.component.ts

src/app/modules/comments/tree/tree.component.html

src/app/modules/comments/tree/tree.component.ts

...s/groups/profile/conversation/conversation.component.html

...pp/modules/legacy/components/cards/activity/activity.html