dashboard: fix setup keyboard done button

tests/test_dashboard_source_contract.py

@@ -0,0 +1,17 @@
+from pathlib import Path
+
+
+ROOT = Path(__file__).resolve().parents[1]
+DASHBOARD = ROOT / "firmware" / "esp32-s3-dashboard" / "esp32-s3-dashboard.ino"
+
+
+def test_setup_done_button_event_is_handled():
+    source = DASHBOARD.read_text()
+
+    callback_start = source.index("static void setup_keyboard_event_cb")
+    callback_end = source.index("static void setup_textarea_event_cb", callback_start)
+    callback = source[callback_start:callback_end]
+
+    assert "LV_EVENT_CLICKED" in callback
+    assert "lv_obj_add_flag(setup_keyboard, LV_OBJ_FLAG_HIDDEN);" in callback
+    assert "lv_obj_add_event_cb(done_button, setup_keyboard_event_cb, LV_EVENT_CLICKED" in source