Fix getOutlineWidth returning the outline offset

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

@@ -358,7 +358,7 @@ public object BackgroundStyleApplicator {
    * @param view The view to get the outline width from
    * @return The outline width in pixels, or null if not set
    */
-  public fun getOutlineWidth(view: View): Float? = getOutlineDrawable(view)?.outlineOffset
+  public fun getOutlineWidth(view: View): Float? = getOutlineDrawable(view)?.outlineWidth
 
   /**
    * Sets box shadows for the view.

packages/react-native/ReactAndroid/src/test/java/com/facebook/react/uimanager/BackgroundStyleApplicatorTest.kt

@@ -0,0 +1,45 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+package com.facebook.react.uimanager
+
+import android.util.DisplayMetrics
+import android.view.View
+import org.assertj.core.api.Assertions.assertThat
+import org.junit.After
+import org.junit.Before
+import org.junit.Test
+import org.junit.runner.RunWith
+import org.robolectric.RobolectricTestRunner
+import org.robolectric.RuntimeEnvironment
+
+/** Tests for [BackgroundStyleApplicator] outline getters. */
+@RunWith(RobolectricTestRunner::class)
+class BackgroundStyleApplicatorTest {
+
+  private lateinit var view: View
+
+  @Before
+  fun setUp() {
+    DisplayMetricsHolder.setScreenDisplayMetrics(DisplayMetrics().apply { density = 2f })
+    view = View(RuntimeEnvironment.getApplication())
+  }
+
+  @After
+  fun tearDown() {
+    DisplayMetricsHolder.setScreenDisplayMetrics(null)
+  }
+
+  @Test
+  fun getOutlineWidthReturnsWidthNotOffset() {
+    BackgroundStyleApplicator.setOutlineWidth(view, 3f)
+    BackgroundStyleApplicator.setOutlineOffset(view, 8f)
+
+    assertThat(BackgroundStyleApplicator.getOutlineWidth(view)).isEqualTo(6f)
+    assertThat(BackgroundStyleApplicator.getOutlineOffset(view)).isEqualTo(16f)
+  }
+}