Various issues with Japanese mode

## Bugs

Some issues were reported using Japanese mode on the answer arcs. I've applied fixes to this branch (NVL mode) https://github.com/07th-mod/umineko-answer/tree/fix_jp_voicedelay_applied .

The fixes might not cover everything 100% - the user is testing the fixes by playing through the game.

I was thinking it would be easier if I restrict Japanese mode to be NVL mode only, unless I can get someone to test both Question and Answer in ADV mode.

#### Various issues with automatic voice timing [Fix being tested in NVL mode]

I've mostly fixed this by copying or inserting voicedelays as appropriate.

I also applied fixes for the problems reported here: https://github.com/07th-mod/umineko-question/issues/173

#### Backlog [Fix being tested in NVL mode]

The backlog is still 1280x720 instead of being 1920x1080.

Copying the existing code from the EN backlog seems to fix this issue.

#### English Umineko logo instead of JP logo [wontfix?]


The issue describes bugs in Japanese mode for a game, referencing a branch with fixes. Start by examining the 'fix_jp_voicedelay_applied' branch to see the changes made for voice timing and backlog resolution. Test the game in NVL mode to verify the fixes, and check if similar issues exist in ADV mode. Look at the linked issue for additional context on voice timing problems.

Written by the indexing model from the issue text.