Do not suggest operation references in postfix templates

#KT-14087 Fixed

idea/src/org/jetbrains/kotlin/idea/codeInsight/postfix/KtPostfixTemplateProvider.kt

@@ -24,6 +24,7 @@ import com.intellij.openapi.util.Condition
 import com.intellij.psi.PsiElement
 import com.intellij.psi.PsiFile
 import org.jetbrains.annotations.TestOnly
+import org.jetbrains.kotlin.KtNodeTypes
 import org.jetbrains.kotlin.idea.caches.resolve.analyze
 import org.jetbrains.kotlin.idea.intentions.negate
 import org.jetbrains.kotlin.idea.refactoring.introduce.introduceVariable.KotlinIntroduceVariableHandler
@@ -139,10 +140,13 @@ private class KtExpressionPostfixTemplateSelector(
                 it !is KtBlockExpression &&
                 it !is KtDeclarationWithBody &&
                 !it.isEffectivelyDeclaration()
-            }.filter { !it.isSelector && it.parent !is KtUserType }
+            }.filter { !it.isSelector && it.parent !is KtUserType && !it.isOperationReference }
             .toList()
 }
 
+private val KtExpression.isOperationReference: Boolean
+    get() = this.node.elementType == KtNodeTypes.OPERATION_REFERENCE
+
 private fun KtElement.isEffectivelyDeclaration() =
         this is KtNamedDeclaration &&
         // function literal is an expression while it's also a subtype of KtNamedDeclaration

idea/testData/codeInsight/postfix/doNotProposeWrappingIncrement.kt

@@ -0,0 +1,3 @@
+fun foo(x: Int) {
+    x++.par<caret>
+}

idea/testData/codeInsight/postfix/doNotProposeWrappingIncrement.kt.after

@@ -0,0 +1,3 @@
+fun foo(x: Int) {
+    (x++)
+}

idea/tests/org/jetbrains/kotlin/idea/codeInsight/postfix/PostfixTemplateProviderTestGenerated.java

@@ -41,6 +41,12 @@ public class PostfixTemplateProviderTestGenerated extends AbstractPostfixTemplat
         doTest(fileName);
     }
 
+    @TestMetadata("doNotProposeWrappingIncrement.kt")
+    public void testDoNotProposeWrappingIncrement() throws Exception {
+        String fileName = KotlinTestUtils.navigationMetadata("idea/testData/codeInsight/postfix/doNotProposeWrappingIncrement.kt");
+        doTest(fileName);
+    }
+
     @TestMetadata("else.kt")
     public void testElse() throws Exception {
         String fileName = KotlinTestUtils.navigationMetadata("idea/testData/codeInsight/postfix/else.kt");