do not move caret to the line beginning in case of selection on paste

fixed PY-8693 Smart indent pasted lines deletes part of string if pasting Django ORM query

python/src/com/jetbrains/python/editor/PythonCopyPasteProcessor.java

@@ -58,7 +58,7 @@ public class PythonCopyPasteProcessor implements CopyPastePreProcessor {
           final int line = document.getLineNumber(selectionModel.getSelectionStart());
           final int lineOffset = getLineStartSafeOffset(document, line);
           final PsiElement ws = file.findElementAt(lineOffset);
-          int offset = ws instanceof PsiWhiteSpace? ws.getTextRange().getEndOffset() : lineOffset;
+          int offset = ws instanceof PsiWhiteSpace? ws.getTextRange().getEndOffset() : caretOffset;
           if (text.equals(selectionModel.getSelectedText())) return text;
           caretModel.moveToOffset(offset);
           selectionModel.setSelection(offset, selectionModel.getSelectionEnd());

python/testData/copyPaste/TwoIndentedLines.after.py

@@ -0,0 +1,7 @@
+#two lines formatting is important
+filter(Q(myfield=123),
+    Q(myanotherfield=321))
+
+a = filter(Q(myfield=123),
+           Q(myanotherfield=321))
+

python/testData/copyPaste/TwoIndentedLines.dst.py

@@ -0,0 +1,5 @@
+#two lines formatting is important
+filter(Q(myfield=123),
+    Q(myanotherfield=321))
+
+a = <caret><selection>'select_me_with_quotes'</selection>

python/testData/copyPaste/TwoIndentedLines.src.py

@@ -0,0 +1,5 @@
+#two lines formatting is important
+<selection><caret>filter(Q(myfield=123),
+    Q(myanotherfield=321))</selection>
+
+a = 'select_me_with_quotes'

python/testSrc/com/jetbrains/python/PyCopyPasteTest.java

@@ -259,6 +259,10 @@ public class PyCopyPasteTest extends PyTestCase {
     doTest();
   }
 
+  public void testTwoIndentedLines() {    //PY-8693
+    doTest();
+  }
+
   private void doTest() {
     String name = getTestName(false);