Improve undo action names

[timothyqiu]

• Avoid concating strings manually for better i18n and easy l10n
  • Use vformat when possible
  • Use separate strings if the changing part is only a few hardcoded strings
• Don't put a period at the end of the name

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The format of these two is also changed from Do Something 'object' to Do Something: object since most other names use this format and the names won't be empty.

godot/editor/editor_settings_dialog.cpp

Line 237 in b8b0339

undo_redo->create_action(vformat(TTR("Edit Built-in Action: %s"), p_name));

godot/editor/editor_settings_dialog.cpp

Line 253 in b8b0339

undo_redo->create_action(vformat(TTR("Edit Shortcut: %s"), p_path));

[akien-mga]

Thanks!