[kotlin] Extract variable: suggest expression to the left of the dot if caret is right before it

^KTIJ-31458 Fixed

GitOrigin-RevId: aa114eb34a87ef07bf05c9f23d270a13fee76a27

plugins/kotlin/idea/tests/test/org/jetbrains/kotlin/idea/SmartSelectionTestGenerated.java

@@ -50,6 +50,11 @@ public class SmartSelectionTestGenerated extends AbstractSmartSelectionTest {
         runTest("testData/smartSelection/beforeComment.kt");
     }
 
+    @TestMetadata("beforeDot.kt")
+    public void testBeforeDot() throws Exception {
+        runTest("testData/smartSelection/beforeDot.kt");
+    }
+
     @TestMetadata("beforeKDocComment.kt")
     public void testBeforeKDocComment() throws Exception {
         runTest("testData/smartSelection/beforeKDocComment.kt");

plugins/kotlin/idea/tests/testData/smartSelection/beforeDot.kt

@@ -0,0 +1,13 @@
+class Foo {
+    val foo: Foo = this
+    val bar: Foo = this
+
+    fun f(f: Foo) {
+        val foo1 = f.foo<caret>.bar
+    }
+}
+
+/*
+f.foo
+f.foo.bar
+*/

plugins/kotlin/refactorings/kotlin.refactorings.common/src/org/jetbrains/kotlin/idea/refactoring/elementSelectionUtils.kt

@@ -12,6 +12,7 @@ import com.intellij.openapi.ui.popup.JBPopupListener
 import com.intellij.openapi.ui.popup.LightweightWindowEvent
 import com.intellij.platform.backend.presentation.TargetPresentation
 import com.intellij.psi.*
+import com.intellij.psi.impl.source.tree.LeafPsiElement
 import com.intellij.psi.util.PsiTreeUtil
 import com.intellij.util.concurrency.AppExecutorUtil
 import org.jetbrains.kotlin.idea.base.resources.KotlinBundle
@@ -118,6 +119,7 @@ fun getSmartSelectSuggestions(
         || isOriginalOffset && element?.node?.elementType == KtTokens.RPAR
         || element is PsiComment
         || element?.getStrictParentOfType<KDoc>() != null
+        || element is LeafPsiElement && element.elementType == KtTokens.DOT
     ) return getSmartSelectSuggestions(file, offset - 1, elementKind, isOriginalOffset = false)
 
     val elements = ArrayList<KtElement>()