pybricks.hubs.EV3Brick: Fix missing cancel button.

Fixes pybricks/support#2592

Author: laurensvalk

CHANGELOG.md

@@ -4,14 +4,19 @@
 
 ## [Unreleased]
 
+### Added
+- Added supporters to EV3 closing credits.
+
 ### Fixed
 - Fixed EV3 screen animation not closing on user display actions ([support#2585]).
 - Fixed EV3 Touch Sensor not detected it is pressed while plugged in ([support#2589]).
 - Fixed EV3 Large and Medium Motors sometimes not detected ([support#2536]).
+- Fixed EV3 left up button not detected ([support#2592]).
 
 [support#2536]: https://github.com/pybricks/support/issues/2536
 [support#2585]: https://github.com/pybricks/support/issues/2585
 [support#2589]: https://github.com/pybricks/support/issues/2589
+[support#2592]: https://github.com/pybricks/support/issues/2592
 
 ## [4.0.0b6] - 2026-02-19
 

pybricks/hubs/pb_type_ev3brick.c

@@ -43,6 +43,9 @@ static mp_obj_t pb_type_ev3brick_button_pressed(mp_obj_t parent_obj) {
     if (flags & PBIO_BUTTON_DOWN) {
         pressed[num++] = pb_type_button_new(MP_QSTR_DOWN);
     }
+    if (flags & PBIO_BUTTON_LEFT_UP) {
+        pressed[num++] = pb_type_button_new(MP_QSTR_LEFT_UP);
+    }
     return mp_obj_new_set(num, pressed);
 }