Multiline string enter handler: do not insert 'trimIndent()' in const (KT-34785)

#KT-34785 Fixed

idea/src/org/jetbrains/kotlin/idea/editor/KotlinMultilineStringEnterHandler.kt

@@ -358,7 +358,7 @@ class KotlinMultilineStringEnterHandler : EnterHandlerDelegateAdapter() {
 
         fun insertTrimCall(document: Document, literal: KtStringTemplateExpression, marginChar: Char?) {
             if (hasTrimIndentCallInChain(literal) || getMarginCharFromTrimMarginCallsInChain(literal) != null) return
-            if (literal.parents.any { it is KtAnnotationEntry }) return
+            if (literal.parents.any { it is KtAnnotationEntry || (it as? KtProperty)?.hasModifier(KtTokens.CONST_KEYWORD) == true }) return
 
             if (marginChar == null) {
                 document.insertString(literal.textRange.endOffset, ".$TRIM_INDENT_CALL()")

idea/testData/editor/enterHandler/multilineString/spaces/noTrimIndentInConst.kt

@@ -0,0 +1,9 @@
+object O {
+    const val s = """<caret>"""
+}
+//-----
+object O {
+    const val s = """
+        <caret>
+    """
+}

idea/tests/org/jetbrains/kotlin/idea/editor/MultiLineStringIndentTestGenerated.java

@@ -220,6 +220,11 @@ public class MultiLineStringIndentTestGenerated extends AbstractMultiLineStringI
             runTest("idea/testData/editor/enterHandler/multilineString/spaces/noTrimIndentInAnnotations.kt");
         }
 
+        @TestMetadata("noTrimIndentInConst.kt")
+        public void testNoTrimIndentInConst() throws Exception {
+            runTest("idea/testData/editor/enterHandler/multilineString/spaces/noTrimIndentInConst.kt");
+        }
+
         @TestMetadata("restoreIndentFromEmptyLine.kt")
         public void testRestoreIndentFromEmptyLine() throws Exception {
             runTest("idea/testData/editor/enterHandler/multilineString/spaces/restoreIndentFromEmptyLine.kt");