"Context Menu" is not localized.

[juggernautjp]

Prerequisites

• Put an X between the brackets on this line if you have done all of the following:
  • Reproduced the problem in Safe Mode: https://flight-manual.atom.io/hacking-atom/sections/debugging/#using-safe-mode
  • Followed all applicable steps in the debugging guide: https://flight-manual.atom.io/hacking-atom/sections/debugging/
  • Checked the FAQs on the message board for common solutions: https://discuss.atom.io/c/faq
  • Checked that your issue isn't already filed: https://github.com/issues?utf8=✓&q=is%3Aissue+user%3Aatom, <atom-i18n; https://github.com/liuderchi/atom-i18n/issues>
  • Checked that there is not already an Atom package that provides the described functionality: https://atom.io/packages

Description

The menu strings of "Context Menu", which are related to Git/GitHub packages, are not localized.

Steps to Reproduce

1. Click "Settings" in "File" menu
2. Click "Packages" in "Settings" view
3. Click "Enable" in "atom-i18n" package
4. Click "Settings" of the "atom-i18n" package
5. Set "Language" to "日本語 (ja)" in the list
6. Click .md file in TreeView
7. Context menu is appeared, which includes English menu

Expected behavior:
All English words and sentences are localized.

Actual behavior:
The messages related to Git/GitHub package, such as "View Unstaged Changes", are not localized.

Reproduces how often:
Always

Versions

Atom    : 1.57.0
Electron: 9.4.4
Chrome  : 83.0.4103.122
Node    : 12.14.1

Additional Information

This issue is related to #237.

• "View Unstaged Changes"
• "View Staged Changes"
• "Beautify editor contents"
• "Debug Atom Beautify"
• cf. issue #237