System note referencing closed issue does not reflect closed status
### Summary
(Summarize the bug encountered concisely)
### Steps to reproduce
- Create a new project
- Create a new issue `IssueA`
- Create a new issue `IssueB`
- Reference `IssueA` in `IssueB`
- Navigate to `IssueA`
- Notice the system note that mentions that `IssueB` referenced `IssueA`
- Close `IssueB`
- Navigate to `IssueA`
- Notice the system note that mentions that `IssueB` referenced `IssueA` does not reflect `IssueB`'s new status
### Example Project
- https://gitlab.com/issue-reproduce/referenced-issue-before-closure/issues/1#note_64716515
### Screenshots
### What is the current *bug* behavior?
In the above example, `IssueA` does not reflect the `IssueB` is now closed in the system note for the mention
### What is the expected *correct* behavior?
In the above example, `IssueA` should reflect that `IssueB` is now closed in the system note for the mention
### Relevant logs and/or screenshots
### Output of checks
gitlab-ce~3293941 `v10.6.0`
### Possible fixes
issue