[Tests][JS] Unmute three tests which pass, when synthetic accessor checks are on 1st phase

^KT-69941
diff --git a/compiler/testData/klib/syntheticAccessors/privateMember/crossModulePrivateLeak/leakingPrivateMethodThroughInheritedClass.kt b/compiler/testData/klib/syntheticAccessors/privateMember/crossModulePrivateLeak/leakingPrivateMethodThroughInheritedClass.kt
index 1dc1cc8..e7207e4 100644
--- a/compiler/testData/klib/syntheticAccessors/privateMember/crossModulePrivateLeak/leakingPrivateMethodThroughInheritedClass.kt
+++ b/compiler/testData/klib/syntheticAccessors/privateMember/crossModulePrivateLeak/leakingPrivateMethodThroughInheritedClass.kt
@@ -1,5 +1,4 @@
 // IGNORE_BACKEND: JS_IR
-// IGNORE_KLIB_SYNTHETIC_ACCESSORS_CHECKS: JS_IR
 // ^^^ This test is muted for JS because the produced IR can't be compiled to JS AST:
 //     - Private member declaration `Parent.x` is moved to the top level by `PrivateMembersLowering`.
 //     - `translateCall(IrCall, ...): JsExpression` processes `super.x()` call and attempts to
diff --git a/compiler/testData/klib/syntheticAccessors/privateMember/crossModulePrivateLeak/leakingPrivateMethodThroughInheritedCompanion.kt b/compiler/testData/klib/syntheticAccessors/privateMember/crossModulePrivateLeak/leakingPrivateMethodThroughInheritedCompanion.kt
index 708009d..d579ae0 100644
--- a/compiler/testData/klib/syntheticAccessors/privateMember/crossModulePrivateLeak/leakingPrivateMethodThroughInheritedCompanion.kt
+++ b/compiler/testData/klib/syntheticAccessors/privateMember/crossModulePrivateLeak/leakingPrivateMethodThroughInheritedCompanion.kt
@@ -1,5 +1,4 @@
 // IGNORE_BACKEND: JS_IR
-// IGNORE_KLIB_SYNTHETIC_ACCESSORS_CHECKS: JS_IR
 // ^^^ This test is muted for JS because the produced IR can't be compiled to JS AST:
 //     - Private member declaration `Parent.x` is moved to the top level by `PrivateMembersLowering`.
 //     - `translateCall(IrCall, ...): JsExpression` processes `super.x()` call and attempts to
diff --git a/compiler/testData/klib/syntheticAccessors/privateMember/crossModulePrivateLeak/leakingPrivateVarThroughReferenceInInternalInlineFun.kt b/compiler/testData/klib/syntheticAccessors/privateMember/crossModulePrivateLeak/leakingPrivateVarThroughReferenceInInternalInlineFun.kt
index f590bb6..610584f 100644
--- a/compiler/testData/klib/syntheticAccessors/privateMember/crossModulePrivateLeak/leakingPrivateVarThroughReferenceInInternalInlineFun.kt
+++ b/compiler/testData/klib/syntheticAccessors/privateMember/crossModulePrivateLeak/leakingPrivateVarThroughReferenceInInternalInlineFun.kt
@@ -1,6 +1,5 @@
 // KT-76093: Support partial linkage for names of property references
 // IGNORE_BACKEND: JS_IR
-// IGNORE_KLIB_SYNTHETIC_ACCESSORS_CHECKS: JS_IR
 // KT-72862: Undefined symbols
 // IGNORE_NATIVE: cacheMode=STATIC_EVERYWHERE
 // KT-72862: No function found for symbol