Print mismatched header contents and file size, which can provide more clues to users when debugging.
(cherry picked from commit f5d256b118914817e2c7ac5c35421e2767fc1e79)
The new `edit/loop_mode` import options lets user choose to either:
- Detect loop points from the WAV (default, same behavior as before)
- Set the loop mode and loop points manually like in AudioStreamSample
Fixes#46164.
(cherry picked from commit b389ce5ccd664c993772a0b71ba99a875106b523)
