Minor, use slightly less internal argument to enable inline classes

libraries/stdlib/common/build.gradle

@@ -53,7 +53,7 @@ compileKotlinCommon {
                 "-Xuse-experimental=kotlin.Experimental",
                 "-Xuse-experimental=kotlin.ExperimentalMultiplatform",
                 "-Xuse-experimental=kotlin.contracts.ExperimentalContracts",
-                "-XXLanguage:+InlineClasses",
+                "-Xinline-classes",
                 "-Xallow-kotlin-package",
                 "-Xallow-result-return-type"
         ]

libraries/stdlib/js-ir/build.gradle

@@ -114,7 +114,7 @@ compileKotlin2Js {
             "-Xuse-experimental=kotlin.Experimental",
             "-Xuse-experimental=kotlin.ExperimentalMultiplatform",
             "-Xuse-experimental=kotlin.contracts.ExperimentalContracts",
-            "-XXLanguage:+InlineClasses",
+            "-Xinline-classes",
         ]
     }
 }

libraries/stdlib/js-v1/build.gradle

@@ -158,7 +158,7 @@ compileKotlin2Js {
             "-Xuse-experimental=kotlin.Experimental",
             "-Xuse-experimental=kotlin.ExperimentalMultiplatform",
             "-Xuse-experimental=kotlin.contracts.ExperimentalContracts",
-            "-XXLanguage:+InlineClasses"
+            "-Xinline-classes"
         ]
     }
 }

libraries/stdlib/jvm/build.gradle

@@ -160,7 +160,7 @@ compileKotlin {
                 "-Xuse-experimental=kotlin.Experimental",
                 "-Xuse-experimental=kotlin.ExperimentalMultiplatform",
                 "-Xuse-experimental=kotlin.contracts.ExperimentalContracts",
-                "-XXLanguage:+InlineClasses"
+                "-Xinline-classes"
         ]
     }
 }