Remove experimental annotation from Option.fromNullable

Author: noti0na1

library/src/scala/Predef.scala

@@ -594,7 +594,6 @@ object Predef extends LowPriorityImplicits {
       !(x eq y)
 
   extension (opt: Option.type)
-    @experimental
     inline def fromNullable[T](t: T | Null): Option[T] = Option(t).asInstanceOf[Option[T]]
 
   // For backward compatibility with code compiled without -Yexplicit-nulls.

library/src/scala/runtime/stdLibPatches/Predef.scala

@@ -67,7 +67,6 @@ object Predef:
       !(x eq y)
 
   extension (opt: Option.type)
-    @experimental
     inline def fromNullable[T](t: T | Null): Option[T] = Option(t).asInstanceOf[Option[T]]
 
   /** A type supporting Self-based type classes.

tests/run-tasty-inspector/stdlibExperimentalDefinitions.scala

@@ -90,9 +90,6 @@ val experimentalDefinitionInLibrary = Set(
   "scala.quoted.Quotes.reflectModule.RenameSelectorModule.apply",
   "scala.quoted.Quotes.reflectModule.SimpleSelectorModule.apply",
 
-  // New feature: fromNullable for explicit nulls
-  "scala.Predef$.fromNullable",
-
   // New feature: modularity
   "scala.Precise",
   "scala.annotation.internal.WitnessNames",