fix: update USE_LOCAL_BREEZE_UI condition to check for local path existence

Author: std-microblock

deps/breeze-ui.lua

@@ -5,8 +5,8 @@ package("breeze-glfw")
 
 local BREEZE_UI_VER = "2026.04.12"
 local BREEZE_UI_HASH = "8dce69e41f3080e0ec610c93f56fa9a1606a7baf"
-local USE_LOCAL_BREEZE_UI = os.getenv("CI") ~= "true"
 local BREEZE_UI_LOCAL_PATH = "../breeze-ui"
+local USE_LOCAL_BREEZE_UI = os.exists(BREEZE_UI_LOCAL_PATH)
 
 package("breeze-nanosvg")
     if USE_LOCAL_BREEZE_UI then