[FIR] Consider @PlatformDependent annotation everywhere (including JS and Native)

^KT-57858 Fixed

Remove FirEmptyOverridesBackwardCompatibilityHelper since it's not used anymore

Remove overridesMemberWithPlatformDependent.kt test file since it becomes redundant

compiler/fir/checkers/src/org/jetbrains/kotlin/fir/analysis/FirEmptyOverridesBackwardCompatibilityHelper.kt

@@ -1,13 +0,0 @@
-/*
- * Copyright 2010-2023 JetBrains s.r.o. and Kotlin Programming Language contributors.
- * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
- */
-
-package org.jetbrains.kotlin.fir.analysis
-
-import org.jetbrains.kotlin.fir.analysis.checkers.context.CheckerContext
-import org.jetbrains.kotlin.fir.symbols.impl.FirCallableSymbol
-
-object FirEmptyOverridesBackwardCompatibilityHelper : FirOverridesBackwardCompatibilityHelper() {
-    override fun overrideCanBeOmitted(overriddenMemberSymbols: List<FirCallableSymbol<*>>, context: CheckerContext): Boolean = false
-}

compiler/fir/entrypoint/src/org/jetbrains/kotlin/fir/session/FirSessionFactoryHelper.kt

@@ -8,7 +8,7 @@ package org.jetbrains.kotlin.fir.session
 import org.jetbrains.annotations.TestOnly
 import org.jetbrains.kotlin.config.*
 import org.jetbrains.kotlin.fir.*
-import org.jetbrains.kotlin.fir.analysis.FirEmptyOverridesBackwardCompatibilityHelper
+import org.jetbrains.kotlin.fir.analysis.FirDefaultOverridesBackwardCompatibilityHelper
 import org.jetbrains.kotlin.fir.analysis.FirOverridesBackwardCompatibilityHelper
 import org.jetbrains.kotlin.fir.extensions.FirExtensionRegistrar
 import org.jetbrains.kotlin.fir.extensions.FirExtensionService
@@ -137,6 +137,6 @@ object FirSessionFactoryHelper {
         register(FirVisibilityChecker::class, FirVisibilityChecker.Default)
         register(ConeCallConflictResolverFactory::class, DefaultCallConflictResolverFactory)
         register(FirPlatformClassMapper::class, FirPlatformClassMapper.Default)
-        register(FirOverridesBackwardCompatibilityHelper::class, FirEmptyOverridesBackwardCompatibilityHelper)
+        register(FirOverridesBackwardCompatibilityHelper::class, FirDefaultOverridesBackwardCompatibilityHelper)
     }
 }

compiler/fir/fir2ir/tests-gen/org/jetbrains/kotlin/test/runners/codegen/FirLightTreeBlackBoxCodegenTestGenerated.java

@@ -353,6 +353,12 @@ public class FirLightTreeBlackBoxCodegenTestGenerated extends AbstractFirLightTr
             runTest("compiler/testData/codegen/box/annotations/parameters.kt");
         }
 
+        @Test
+        @TestMetadata("platformDependent.kt")
+        public void testPlatformDependent() throws Exception {
+            runTest("compiler/testData/codegen/box/annotations/platformDependent.kt");
+        }
+
         @Test
         @TestMetadata("propertyWithPropertyInInitializerAsParameter.kt")
         public void testPropertyWithPropertyInInitializerAsParameter() throws Exception {

compiler/fir/fir2ir/tests-gen/org/jetbrains/kotlin/test/runners/codegen/FirLightTreeBlackBoxCodegenWithIrFakeOverrideGeneratorTestGenerated.java

@@ -353,6 +353,12 @@ public class FirLightTreeBlackBoxCodegenWithIrFakeOverrideGeneratorTestGenerated
             runTest("compiler/testData/codegen/box/annotations/parameters.kt");
         }
 
+        @Test
+        @TestMetadata("platformDependent.kt")
+        public void testPlatformDependent() throws Exception {
+            runTest("compiler/testData/codegen/box/annotations/platformDependent.kt");
+        }
+
         @Test
         @TestMetadata("propertyWithPropertyInInitializerAsParameter.kt")
         public void testPropertyWithPropertyInInitializerAsParameter() throws Exception {

compiler/fir/fir2ir/tests-gen/org/jetbrains/kotlin/test/runners/codegen/FirPsiBlackBoxCodegenTestGenerated.java

@@ -353,6 +353,12 @@ public class FirPsiBlackBoxCodegenTestGenerated extends AbstractFirPsiBlackBoxCo
             runTest("compiler/testData/codegen/box/annotations/parameters.kt");
         }
 
+        @Test
+        @TestMetadata("platformDependent.kt")
+        public void testPlatformDependent() throws Exception {
+            runTest("compiler/testData/codegen/box/annotations/platformDependent.kt");
+        }
+
         @Test
         @TestMetadata("propertyWithPropertyInInitializerAsParameter.kt")
         public void testPropertyWithPropertyInInitializerAsParameter() throws Exception {