## Description
Fix issue where typing in a short seed on world creation doesn't save the seed correctly
## Changes
### Previous Behavior
Typing in a seed on the world creation menu that's less than 8 characters long will result in garbage data being saved as the seed. Happens with controller and KBM.
You can see this in-game - if you exit the world options menu and go back in, the seed will show up as boxes □□□.
Weirdly, if you type a seed again, it behaves as expected.
### Root Cause
For some reason, assigning `m_params->seed` to the seed text points it to garbage data, when it's 7 characters or less.
### New Behavior
Seed entry behaves as expected.
### Fix Implementation
- Added `static_cast<wstring>` before assignment to `m_params->seed`.
- Also replaced `(wchar_t *)` with `reinterpret_cast<wchar_t*>` in the functions.
### AI Use Disclosure
No AI was used