Add a workaround for compiler error

ktor-test-server/build.gradle.kts

@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2025 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 plugins {
@@ -33,4 +33,10 @@ dependencies {
 // Should be synced with gradle/gradle-daemon-jvm.properties
 kotlin {
     jvmToolchain(21)
+
+    compilerOptions {
+        // A workaround for a compiler issue KT-74984
+        // TODO: Remove after the issue is fixed
+        freeCompilerArgs.add("-Xignore-const-optimization-errors")
+    }
 }