Fix list handling for Uint8List and update canvas tests

Updated Control model to avoid treating Uint8List as a generic list. Refactored matplotlib chart examples for consistent import style. Added and updated integration tests and golden images for canvas, including a new test for drawing images from bytes. Also enabled the test for Image control with src_bytes.

Author: FeodorFitsner

packages/flet/lib/src/models/control.dart

@@ -435,7 +435,7 @@ class Control extends ChangeNotifier {
             MapEntry(key, _transformIfControl(entryValue, parent, backend)),
       );
     }
-    if (value is List) {
+    if (value is List && value is! Uint8List) {
       return value
           .map((element) => _transformIfControl(element, parent, backend))
           .toList(growable: true);

sdk/python/examples/controls/charts/matplotlib_chart/3d.py

@@ -1,10 +1,10 @@
 import logging
 
-import flet_charts
 import matplotlib.pyplot as plt
 import numpy as np
 
 import flet as ft
+import flet_charts
 
 logging.basicConfig(level=logging.INFO)
 

sdk/python/examples/controls/charts/matplotlib_chart/animate.py

@@ -1,10 +1,10 @@
 import logging
 
-import flet_charts
 import matplotlib.pyplot as plt
 import numpy as np
 
 import flet as ft
+import flet_charts
 
 logging.basicConfig(level=logging.INFO)
 

sdk/python/examples/controls/charts/matplotlib_chart/bar_chart.py

@@ -1,8 +1,7 @@
-import flet_charts as fch
-import matplotlib
 import matplotlib.pyplot as plt
 
 import flet as ft
+import flet_charts as fch
 
 
 def main(page: ft.Page):

sdk/python/examples/controls/charts/matplotlib_chart/handle_events.py

@@ -1,8 +1,8 @@
-import flet_charts
 import matplotlib.pyplot as plt
 import numpy as np
 
 import flet as ft
+import flet_charts
 
 state = {}
 
@@ -86,7 +86,7 @@ def update(self):
             self.selected.set_visible(True)
             self.selected.set_data([xs[dataind]], [ys[dataind]])
 
-            self.text.set_text("selected: %d" % dataind)
+            self.text.set_text(f"selected: {dataind:d}")
             fig.canvas.draw()
 
     browser = PointBrowser()

sdk/python/examples/controls/charts/matplotlib_chart/toolbar.py

@@ -1,9 +1,8 @@
-import flet_charts as fch
-import matplotlib
 import matplotlib.pyplot as plt
 import numpy as np
 
 import flet as ft
+import flet_charts as fch
 
 
 def main(page: ft.Page):