Add CHDIR in window_view_mandelbrot test and restore full gui_alert functionality

Author: a740g

internal/c/parts/gui/gui.cpp

@@ -351,8 +351,7 @@ int gui_alert(const char *message, const char *title, const char *type) {
     // TODO: Probably we should adapt this to a timed terminal message box or prompt when running in $CONSOLE:ONLY mode.
     fprintf(stderr, "\nRuntime error: %s\n", message);
     fflush(stderr);
-    return 0; // temporarily disable the dialog box to debug CI hangs
-    //return tinyfd_messageBox(title, message, type, "error", 1);
+    return tinyfd_messageBox(title, message, type, "error", 1);
 }
 
 /// @brief This is used internally by libqb to show warning and failure messages

tests/compile_tests/view/window_view_mandelbrot.bas

@@ -2,6 +2,8 @@ DEFLNG A-Z
 OPTION _EXPLICIT
 $CONSOLE:ONLY
 
+CHDIR _STARTDIR$
+
 CONST MAXLOOP = 30, MAXSIZE = 1000000
 CONST WLeft = -1000, WRight = 250, WTop = 625, WBottom = -625
 CONST VLeft = 110, VRight = 529, VTop = 5, VBottom = 179