fix(module:i18n): added property missing in ar_EG

[Abdullah700]

PR Checklist

Please check if your PR fulfills the following requirements:

• The commit message follows our guidelines: https://github.com/NG-ZORRO/ng-zorro-antd/blob/master/CONTRIBUTING.md#commit
• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)

PR Type

What kind of change does this PR introduce?

[x] Bugfix
[ ] Feature
[ ] Code style update (formatting, local variables)
[ ] Refactoring (no functional changes, no api changes)
[ ] Build related changes
[ ] CI related changes
[ ] Documentation content changes
[ ] Application (the showcase website) / infrastructure changes
[ ] Other... Please describe:

What is the current behavior?

Issue Number: #4159

What is the new behavior?

all localization for ar_EG should be displayed in arabic

Does this PR introduce a breaking change?

[ ] Yes
[x] No

Other information

[netlify]

Deploy preview for ng-zorro-master ready!

Built with commit 52bfb29

https://deploy-preview-4165--ng-zorro-master.netlify.com

[codecov]

Codecov Report

Merging #4165 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #4165   +/-   ##
=======================================
  Coverage   92.27%   92.27%           
=======================================
  Files         517      517           
  Lines       10961    10961           
  Branches     1985     1985           
=======================================
  Hits        10114    10114           
  Misses        422      422           
  Partials      425      425

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update de1e496...52bfb29. Read the comment docs.

[wzhudev]

@Abdullah700 Great work! Thank you!

[wzhudev]

LGTM