[FIR2IR] Properly set isAssignable flag for parameters of tailrec functions

^KT-63973 Fixed

js/js.tests/tests-gen/org/jetbrains/kotlin/js/test/fir/FirJsCodegenBoxTestGenerated.java

@@ -37923,6 +37923,12 @@ public class FirJsCodegenBoxTestGenerated extends AbstractFirJsCodegenBoxTest {
             runTest("compiler/testData/codegen/box/vararg/varargInFunParam.kt");
         }
 
+        @Test
+        @TestMetadata("varargInTailrec.kt")
+        public void testVarargInTailrec() throws Exception {
+            runTest("compiler/testData/codegen/box/vararg/varargInTailrec.kt");
+        }
+
         @Test
         @TestMetadata("varargsAndFunctionLiterals.kt")
         public void testVarargsAndFunctionLiterals() throws Exception {

js/js.tests/tests-gen/org/jetbrains/kotlin/js/test/fir/FirJsES6CodegenBoxTestGenerated.java

@@ -37923,6 +37923,12 @@ public class FirJsES6CodegenBoxTestGenerated extends AbstractFirJsES6CodegenBoxT
             runTest("compiler/testData/codegen/box/vararg/varargInFunParam.kt");
         }
 
+        @Test
+        @TestMetadata("varargInTailrec.kt")
+        public void testVarargInTailrec() throws Exception {
+            runTest("compiler/testData/codegen/box/vararg/varargInTailrec.kt");
+        }
+
         @Test
         @TestMetadata("varargsAndFunctionLiterals.kt")
         public void testVarargsAndFunctionLiterals() throws Exception {

js/js.tests/tests-gen/org/jetbrains/kotlin/js/test/ir/IrJsCodegenBoxTestGenerated.java

@@ -37377,6 +37377,12 @@ public class IrJsCodegenBoxTestGenerated extends AbstractIrJsCodegenBoxTest {
             runTest("compiler/testData/codegen/box/vararg/varargInFunParam.kt");
         }
 
+        @Test
+        @TestMetadata("varargInTailrec.kt")
+        public void testVarargInTailrec() throws Exception {
+            runTest("compiler/testData/codegen/box/vararg/varargInTailrec.kt");
+        }
+
         @Test
         @TestMetadata("varargsAndFunctionLiterals.kt")
         public void testVarargsAndFunctionLiterals() throws Exception {

js/js.tests/tests-gen/org/jetbrains/kotlin/js/test/ir/IrJsES6CodegenBoxTestGenerated.java

@@ -37377,6 +37377,12 @@ public class IrJsES6CodegenBoxTestGenerated extends AbstractIrJsES6CodegenBoxTes
             runTest("compiler/testData/codegen/box/vararg/varargInFunParam.kt");
         }
 
+        @Test
+        @TestMetadata("varargInTailrec.kt")
+        public void testVarargInTailrec() throws Exception {
+            runTest("compiler/testData/codegen/box/vararg/varargInTailrec.kt");
+        }
+
         @Test
         @TestMetadata("varargsAndFunctionLiterals.kt")
         public void testVarargsAndFunctionLiterals() throws Exception {