Yes, this can absolutely count as Encouragement and Affirmation within Quality of Feedback.
The teacher’s response goes beyond general praise by naming the effort (“I know that was hard…”) and connecting it to the specific behavior (sharing). That kind of specific, process-focused feedback is exactly what we look for in this indicator.
Even though it’s a social-emotional moment (not academic), it still counts, the key is how the teacher responds, not the type of skill.