[FE] Fix source element duplication in object literal expressions

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|>()
+    }
+
+}