Introduce...: Allow semicolon extraction

#KT-7583 Fixed

idea/src/org/jetbrains/kotlin/idea/codeInsight/CodeInsightUtils.java

@@ -27,6 +27,7 @@ import com.intellij.refactoring.util.CommonRefactoringUtil;
 import com.intellij.util.text.CharArrayUtil;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
+import org.jetbrains.kotlin.lexer.JetTokens;
 import org.jetbrains.kotlin.psi.*;
 import org.jetbrains.kotlin.types.JetType;
 
@@ -100,7 +101,10 @@ public class CodeInsightUtils {
         }
 
         for (PsiElement element : array) {
-            if (!(element instanceof JetExpression || element instanceof PsiWhiteSpace || element instanceof PsiComment)) {
+            if (!(element instanceof JetExpression
+                  || element.getNode().getElementType() == JetTokens.SEMICOLON
+                  || element instanceof PsiWhiteSpace
+                  || element instanceof PsiComment)) {
                 return PsiElement.EMPTY_ARRAY;
             }
         }

idea/testData/refactoring/extractFunction/basic/lineWithSemicolon.kt

@@ -0,0 +1,3 @@
+fun foo() {
+    <selection>println("Hey!");</selection>
+}

idea/testData/refactoring/extractFunction/basic/lineWithSemicolon.kt.after

@@ -0,0 +1,7 @@
+fun foo() {
+    __dummyTestFun__()
+}
+
+private fun __dummyTestFun__() {
+    println("Hey!");
+}

idea/tests/org/jetbrains/kotlin/idea/refactoring/introduce/JetExtractionTestGenerated.java

@@ -378,6 +378,12 @@ public class JetExtractionTestGenerated extends AbstractJetExtractionTest {
                 doExtractFunctionTest(fileName);
             }
 
+            @TestMetadata("lineWithSemicolon.kt")
+            public void testLineWithSemicolon() throws Exception {
+                String fileName = JetTestUtils.navigationMetadata("idea/testData/refactoring/extractFunction/basic/lineWithSemicolon.kt");
+                doExtractFunctionTest(fileName);
+            }
+
             @TestMetadata("localClassExtraction.kt")
             public void testLocalClassExtraction() throws Exception {
                 String fileName = JetTestUtils.navigationMetadata("idea/testData/refactoring/extractFunction/basic/localClassExtraction.kt");