improve Japanese localization

[h1data]

Description

Improving Japanese localization
Resolves: #19438

Type of change

• Translations

How Has This Been Tested?

• Compiled "po" files to "mo" and checked the view of the application.

Test Configuration:

• Operating System: Windows 10

Checklist:

• My code follows the style guidelines of this project as described in UltiMaker Meta and Cura QML best practices
• I have read the Contribution guide
• I have commented my code, particularly in hard-to-understand areas
• I have uploaded any files required to test this change

[wawanbreton]

Hi @h1data, thanks for your contribution, that's a lot of work ! I can not read Japanese myself, but the changes look consistent, so I will merge them for now, and later we will try to find someone to double-chek them.