fixed PY-11198 Move Statement Up/Down near dictionary expression unexpectedly merges statements

python/testData/mover/sameLevelAsDict.py

@@ -0,0 +1,9 @@
+a = {
+    'c': 99999
+}
+print "Hello, there."
+a = {
+    'b': 1,
+    'c': 2
+}
+print <caret>a['c']

python/testData/mover/sameLevelAsDict_afterDown.py

@@ -0,0 +1,9 @@
+a = {
+    'c': 99999
+}
+print "Hello, there."
+a = {
+    'b': 1,
+    'c': 2
+}
+print a['c']

python/testData/mover/sameLevelAsDict_afterUp.py

@@ -0,0 +1,9 @@
+a = {
+    'c': 99999
+}
+print "Hello, there."
+print a['c']
+a = {
+    'b': 1,
+    'c': 2
+}