fixed PY-5197 Move statement: inconsistent skipping of empty lines

python/testData/mover/doubleIf.py

@@ -1,6 +1,5 @@
 if condition1:
     pass
-
 if condi<caret>tion:
     test1()
 else:

python/testData/mover/doubleIf_afterDown.py

@@ -1,6 +1,5 @@
 if condition1:
     pass
-
 if condition:
     test1()
 else:

python/testData/mover/emptyLine.py

@@ -0,0 +1,4 @@
+if True:
+    a = 1
+
+b =<caret> 2

python/testData/mover/emptyLine_afterDown.py

@@ -0,0 +1,4 @@
+if True:
+    a = 1
+
+b = 2

python/testData/mover/emptyLine_afterUp.py

@@ -0,0 +1,4 @@
+if True:
+    a = 1
+b = 2
+