PY-38378 PY-38424 Fix updating variables in debugger console

We now access the `frame.f_locals` attribute only once. Multiple access leads to the loss of the changes we have made. We also alter the second argument of the `PyFrame_LocalsToFast()` to 1 to ensure that all the deleted variables will be wiped out from the frame locals.

(cherry picked from commit 28abff39b2c37f30651db220e8700032a629ce73)

GitOrigin-RevId: 8514da7ec187c1192ea9cdf851f89f008242fc30

python/testData/debug/test_update_series_in_debug_console.py

@@ -0,0 +1,15 @@
+import pandas as pd
+
+
+class C:
+    @staticmethod
+    def f():
+
+        def g():
+            return pd.Series(index=[40, 50, 60], data=[1, 2, 3])
+
+        a = g()
+        a  # breakpoint
+
+
+C.f()