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fix(training): correct dataloader annotation and modernize Optional syntax (#3534)

* fix(training): replace legacy Optional annotations

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>
Signed-off-by: Faisal Alsrheed <faisalalsrheed@users.noreply.github.com>

* fix(training): correct dataloader annotation and modernize Optional syntax

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>
Signed-off-by: Faisal Alsrheed <faisalalsrheed@users.noreply.github.com>

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Signed-off-by: Faisal Alsrheed <faisalalsrheed@users.noreply.github.com>
Co-authored-by: Faisal Alsrheed <faisalalsrheed@users.noreply.github.com>
Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>
F
Faisal Alsrheed committed
68d516808c8a11323b03c4f1869197f29cc47252
Parent: 24d8711
Committed by GitHub <noreply@github.com> on 8/16/2026, 10:46:14 PM