Replace deprecated non-bool mask in `masked_fill_`#5

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seeeturtle wants to merge 2 commits intof-charton:mainfrom

seeeturtle:issue-4-patch

Commits on Jun 7, 2025

transformer.py: replace deprecated `.byte()` with `.bool()`
seeeturtle
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Commits on Jun 8, 2025

lstm.py: replace deprecated `.byte()` with `.bool()`
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