Add KDoc documentation to OutlineStyle.kt

Summary:
Added KDoc documentation to OutlineStyle.kt:

- Enum documentation explaining CSS outline-style correspondence
- Explained that outlines are drawn outside border edge
- Documented each value: SOLID, DASHED, DOTTED
- Added fromString() method documentation
- Added see reference to BorderStyle

changelog: [internal] internal

bypass-github-export-checks Documentation only

Reviewed By: javache

Differential Revision: D91555118

fbshipit-source-id: d80a7d17b15fc8b5d38b1265accdb4548d5c563f

Author: mdvacca

packages/react-native/ReactAndroid/src/main/java/com/facebook/react/uimanager/style/OutlineStyle.kt

@@ -7,12 +7,29 @@
 
 package com.facebook.react.uimanager.style
 
+/**
+ * Enum representing the possible outline rendering styles.
+ *
+ * These values correspond to CSS outline-style property values supported by React Native. Outlines
+ * are drawn outside the border edge and do not affect layout.
+ *
+ * @see BorderStyle
+ */
 public enum class OutlineStyle {
+  /** A solid continuous line. */
   SOLID,
+  /** A series of dashes. */
   DASHED,
+  /** A series of dots. */
   DOTTED;
 
   public companion object {
+    /**
+     * Parses a string into an OutlineStyle.
+     *
+     * @param outlineStyle The string value (case-insensitive)
+     * @return The corresponding OutlineStyle, or null if not recognized
+     */
     @JvmStatic
     public fun fromString(outlineStyle: String): OutlineStyle? {
       return when (outlineStyle.lowercase()) {