[stdlib, build] Make stdlib Wasm and Native compilation respect 'kotlin.build.disable.werror'

Motivation: now it's easier to do impact estimations on bootstrapped
Kotlin repo if warning diagnostics are used to log data to build log.
It's easier because warnings in stdlib won't fail the compilation.
diff --git a/libraries/stdlib/build.gradle.kts b/libraries/stdlib/build.gradle.kts
index 69c5f17..1cd1335 100644
--- a/libraries/stdlib/build.gradle.kts
+++ b/libraries/stdlib/build.gradle.kts
@@ -249,9 +249,7 @@
                         diagnosticNamesArg,
                     )
 
-                    if (!kotlinBuildProperties.disableWerror) {
-                        allWarningsAsErrors = true
-                    }
+                    if (!kotlinBuildProperties.disableWerror) allWarningsAsErrors = true
                 }
                 compileTaskProvider.configure {
                     compilerOptions.mainCompilationOptions()
@@ -276,7 +274,7 @@
             @Suppress("DEPRECATION")
             val main by getting {
                 kotlinOptions.freeCompilerArgs += "-Xir-module-name=$KOTLIN_WASM_STDLIB_NAME"
-                kotlinOptions.allWarningsAsErrors = true
+                if (!kotlinBuildProperties.disableWerror) kotlinOptions.allWarningsAsErrors = true
                 compileTaskProvider.configure {
                     compilerOptions.mainCompilationOptions()
                 }
@@ -334,6 +332,7 @@
                         "-Xexpect-actual-classes",
                         "-nostdlib",
                     )
+                    if (!kotlinBuildProperties.disableWerror) kotlinOptions.allWarningsAsErrors = true
                 }
             }
         }