Internalize and migrate DimensionPropConverter to Kotlin (#49676)

Summary:
As part of the initiative to reduce the public API surface, this class can be internalized. I've checked there are [no relevant OSS usages](https://github.com/search?type=code&q=NOT+is%3Afork+NOT+org%3Afacebook+NOT+repo%3Areact-native-tvos%2Freact-native-tvos+NOT+repo%3Anuagoz%2Freact-native+NOT+repo%3A2lambda123%2Freact-native+NOT+repo%3Abeanchips%2Ffacebookreactnative+NOT+repo%3AfabOnReact%2Freact-native-notes+NOT+user%3Ahuntie+NOT+user%3Acortinico+NOT+repo%3AMaxdev18%2Fpowersync_app+NOT+repo%3Acarter-0%2Finstagram-decompiled+NOT+repo%3Am0mosenpai%2Finstadamn+NOT+repo%3AA-Star100%2FA-Star100-AUG2-2024+NOT+repo%3Alclnrd%2Fdetox-scrollview-reproductible+NOT+repo%3ADionisisChytiris%2FWorldWiseTrivia_Main+NOT+repo%3Apast3l%2Fhi2+NOT+repo%3AoneDotpy%2FCaribouQuest+NOT+repo%3Abejayoharen%2Fdailytodo+NOT+repo%3Amolangning%2Freversing-discord+NOT+repo%3AScottPrzy%2Freact-native+NOT+repo%3Agabrieldonadel%2Freact-native-visionos+NOT+repo%3AGabriel2308%2FTestes-Soft+NOT+repo%3Adawnzs03%2FflakyBuild+NOT+repo%3Acga2351%2Fcode+NOT+repo%3Astreeg%2Ftcc+NOT+repo%3Asoftware-mansion-labs%2Freact-native-swiftui+NOT+repo%3Apkcsecurity%2Fdecompiled-lightbulb+com.facebook.react.bridge.DimensionPropConverter).

In this PR I'm also converting this class to Kotlin as it's needed to make it internal as per https://github.com/facebook/react-native/pull/49676#issuecomment-2683579829.

## Changelog:

[INTERNAL] - Internalize and migrate com.facebook.react.bridge.DimensionPropConverter to Kotlin

Pull Request resolved: https://github.com/facebook/react-native/pull/49676

Test Plan:
```bash
yarn test-android
yarn android
```

Reviewed By: NickGerleman

Differential Revision: D70208912

Pulled By: arushikesarwani94

fbshipit-source-id: c74326ca1d82417457c2a438fa28e20f0a0eaa82

packages/react-native/ReactAndroid/api/ReactAndroid.api

@@ -700,11 +700,6 @@ public class com/facebook/react/bridge/DefaultJSExceptionHandler : com/facebook/
 	public fun handleException (Ljava/lang/Exception;)V
 }
 
-public class com/facebook/react/bridge/DimensionPropConverter {
-	public fun <init> ()V
-	public static fun getDimension (Ljava/lang/Object;)Lcom/facebook/yoga/YogaValue;
-}
-
 public abstract interface class com/facebook/react/bridge/Dynamic {
 	public abstract fun asArray ()Lcom/facebook/react/bridge/ReadableArray;
 	public abstract fun asBoolean ()Z

packages/react-native/ReactAndroid/src/main/java/com/facebook/react/bridge/DimensionPropConverter.java

@@ -1,33 +0,0 @@
-/*
- * 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.bridge;
-
-import androidx.annotation.Nullable;
-import com.facebook.yoga.YogaUnit;
-import com.facebook.yoga.YogaValue;
-
-public class DimensionPropConverter {
-
-  @Nullable
-  public static YogaValue getDimension(@Nullable Object value) {
-    if (value == null) {
-      return null;
-    }
-
-    if (value instanceof Double) {
-      return new YogaValue(((Double) value).floatValue(), YogaUnit.POINT);
-    }
-
-    if (value instanceof String) {
-      return YogaValue.parse((String) value);
-    }
-
-    throw new JSApplicationCausedNativeException(
-        "DimensionValue: the value must be a number or string.");
-  }
-}

packages/react-native/ReactAndroid/src/main/java/com/facebook/react/bridge/DimensionPropConverter.kt

@@ -0,0 +1,27 @@
+/*
+ * 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.bridge
+
+import com.facebook.yoga.YogaUnit
+import com.facebook.yoga.YogaValue
+
+internal class DimensionPropConverter {
+  companion object {
+    @JvmStatic
+    fun getDimension(value: Any?): YogaValue? {
+      return when (value) {
+        null -> null
+        is Double -> YogaValue(value.toFloat(), YogaUnit.POINT)
+        is String -> YogaValue.parse(value)
+        else ->
+            throw JSApplicationCausedNativeException(
+                "DimensionValue: the value must be a number or string.")
+      }
+    }
+  }
+}

packages/react-native/ReactAndroid/src/test/java/com/facebook/react/bridge/DimensionPropConverterTest.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.bridge
+
+import com.facebook.yoga.YogaUnit
+import org.assertj.core.api.Assertions.assertThat
+import org.junit.Test
+
+/** Tests for [DimensionPropConverter] */
+class DimensionPropConverterTest {
+
+  @Test
+  fun doubleReturnsYogaValue() {
+    val result = DimensionPropConverter.getDimension(10.5)
+
+    assertThat(result).isNotNull
+    assertThat(result?.value).isEqualTo(10.5f)
+    assertThat(result?.unit).isEqualTo(YogaUnit.POINT)
+  }
+
+  @Test
+  fun stringReturnsParsedYogaValue() {
+    val result = DimensionPropConverter.getDimension("100%")
+
+    assertThat(result).isNotNull
+    assertThat(result?.unit).isEqualTo(YogaUnit.PERCENT)
+  }
+
+  @Test
+  fun nullReturnsNull() {
+    val result = DimensionPropConverter.getDimension(null)
+
+    assertThat(result).isNull()
+  }
+
+  @Test(expected = JSApplicationCausedNativeException::class)
+  fun invalidTypeThrowsException() {
+    DimensionPropConverter.getDimension(listOf(1, 2, 3))
+  }
+}