2025.9.1.1152 - Bugfixes for renderer decoupling

Got a few bugfixes for the decoupling mechanism to improve its reliability and stability!

Compatible with previous, though update recommended for better experience!

Locale:

• Merged German locale update by @muppeq

Fixes:

• Fixed Unity Native video players jittering when the renderer is decoupled (reported by @epiceaston197, issue #5494)
• Fixed crash when setting decoupling activation framerate to 0 (reported by @cubee_cb, @gyztormizirath, @epiceaston197, issue #5492)
• Improved renderer coupling re-activation mechanism to be more reliable -- This fixes the decoupling remaining active for extended periods of time due to jitter in the rendering process itself causing the re-activation timings to be off