Only check language version in MemberDeserializer.loadAsSuspend

This is still not 100% foolproof because one may place such a
requirement manually on a suspend function (with `@RequireKotlin`, for
example), which will trick the compiler into thinking that this is a new
suspend function, even if it was compiled with old coroutines. But it's
still better than only checking the version number

core/deserialization/src/org/jetbrains/kotlin/serialization/deserialization/MemberDeserializer.kt

@@ -137,7 +137,9 @@ class MemberDeserializer(private val c: DeserializationContext) {
     }
 
     private fun DeserializedMemberDescriptor.versionAndReleaseCoroutinesMismatch(): Boolean =
-        c.components.configuration.releaseCoroutines && versionRequirements.none { it.version == VersionRequirement.Version(1, 3) }
+        c.components.configuration.releaseCoroutines && versionRequirements.none {
+            it.version == VersionRequirement.Version(1, 3) && it.kind == ProtoBuf.VersionRequirement.VersionKind.LANGUAGE_VERSION
+        }
 
     private fun loadOldFlags(oldFlags: Int): Int {
         val lowSixBits = oldFlags and 0x3f
@@ -229,8 +231,7 @@ class MemberDeserializer(private val c: DeserializationContext) {
         descriptor.typeParameters.forEach { it.upperBounds }
         descriptor.isExperimentalCoroutineInReleaseEnvironment = local.typeDeserializer.experimentalSuspendFunctionTypeEncountered ||
                 ((c.containingDeclaration as? DeserializedClassDescriptor)?.c?.typeDeserializer?.experimentalSuspendFunctionTypeEncountered == true &&
-                        c.components.configuration.releaseCoroutines &&
-                        descriptor.versionRequirements.none { it.version == VersionRequirement.Version(1, 3) })
+                        descriptor.versionAndReleaseCoroutinesMismatch())
 
         return descriptor
     }