[FE] Fix source element duplication in object literal expressions

analysis/analysis-api-fir/src/org/jetbrains/kotlin/analysis/api/fir/utils/firUtils.kt

@@ -45,7 +45,6 @@ internal fun KtExpression.unwrap(): KtExpression {
     return when (this) {
         is KtLabeledExpression -> baseExpression?.unwrap()
         is KtAnnotatedExpression -> baseExpression?.unwrap()
-        is KtObjectLiteralExpression -> objectDeclaration
         is KtFunctionLiteral -> (parent as? KtLambdaExpression)?.unwrap()
         else -> this
     } ?: this

analysis/low-level-api-fir/src/org/jetbrains/kotlin/analysis/low/level/api/fir/element/builder/FirElementBuilder.kt

@@ -44,7 +44,6 @@ internal class FirElementBuilder(
                     // null will be return in case of invalid KtValueArgument
                     deparenthesized.getArgumentExpression()
                 }
-                deparenthesized is KtObjectLiteralExpression -> deparenthesized.objectDeclaration
                 deparenthesized is KtStringTemplateEntryWithExpression -> deparenthesized.expression
                 deparenthesized is KtUserType && deparenthesized.parent is KtNullableType -> deparenthesized.parent as KtNullableType
                 else -> deparenthesized

analysis/low-level-api-fir/testdata/getOrBuildFir/declarations/objectLiteral.kt

@@ -0,0 +1,5 @@
+// LOOK_UP_FOR_ELEMENT_OF_TYPE: org.jetbrains.kotlin.psi.KtObjectDeclaration
+
+fun test() {
+    <expr>object {}</expr>
+}

analysis/low-level-api-fir/testdata/getOrBuildFir/declarations/objectLiteral.txt

@@ -0,0 +1,11 @@
+KT element: KtObjectDeclaration
+FIR element: FirAnonymousObjectImpl
+FIR source kind: KtRealSourceElementKind
+
+FIR element rendered:
+object : R|kotlin/Any| {
+    private constructor(): R|<anonymous>| {
+        super<R|kotlin/Any|>()
+    }
+
+}

analysis/low-level-api-fir/testdata/getOrBuildFir/declarations/objectLiteralExpression.kt

@@ -0,0 +1,5 @@
+// LOOK_UP_FOR_ELEMENT_OF_TYPE: org.jetbrains.kotlin.psi.KtObjectLiteralExpression
+
+fun test() {
+    <expr>object {}</expr>
+}

analysis/low-level-api-fir/testdata/getOrBuildFir/declarations/objectLiteralExpression.txt

@@ -0,0 +1,11 @@
+KT element: KtObjectLiteralExpression
+FIR element: FirAnonymousObjectExpressionImpl
+FIR source kind: KtRealSourceElementKind
+
+FIR element rendered:
+object : R|kotlin/Any| {
+    private constructor(): R|<anonymous>| {
+        super<R|kotlin/Any|>()
+    }
+
+}

analysis/low-level-api-fir/tests/org/jetbrains/kotlin/analysis/low/level/api/fir/GetOrBuildFirTestGenerated.java

@@ -215,6 +215,18 @@ public class GetOrBuildFirTestGenerated extends AbstractGetOrBuildFirTest {
             KtTestUtil.assertAllTestsPresentByMetadataWithExcluded(this.getClass(), new File("analysis/low-level-api-fir/testdata/getOrBuildFir/declarations"), Pattern.compile("^(.+)\\.kt$"), null, true);
         }
 
+        @Test
+        @TestMetadata("objectLiteral.kt")
+        public void testObjectLiteral() throws Exception {
+            runTest("analysis/low-level-api-fir/testdata/getOrBuildFir/declarations/objectLiteral.kt");
+        }
+
+        @Test
+        @TestMetadata("objectLiteralExpression.kt")
+        public void testObjectLiteralExpression() throws Exception {
+            runTest("analysis/low-level-api-fir/testdata/getOrBuildFir/declarations/objectLiteralExpression.kt");
+        }
+
         @Test
         @TestMetadata("propertyDelegate.kt")
         public void testPropertyDelegate() throws Exception {