adds numpy.NaN => np.nan conversion to the strategy updater since numpy2.0 changed that, now it throws errors.

To adjust more of those we can now easily expand on it.
This includes aliases for imports as well.

tests/test_strategy_updater.py

@@ -42,8 +42,10 @@ def test_strategy_updater_methods(default_conf, caplog) -> None:
     instance_strategy_updater = StrategyUpdater()
     modified_code1 = instance_strategy_updater.update_code(
         """
+import numpy as np
 class testClass(IStrategy):
     def populate_buy_trend():
+        some_variable = np.NaN
         pass
     def populate_sell_trend():
         pass
@@ -62,6 +64,7 @@ class testClass(IStrategy):
     assert "check_exit_timeout" in modified_code1
     assert "custom_exit" in modified_code1
     assert "INTERFACE_VERSION = 3" in modified_code1
+    assert "np.nan" in modified_code1
 
 
 def test_strategy_updater_params(default_conf, caplog) -> None: