Fix: TextBoundsInfoResult constructor should be @Nullable

Bug: 266177479
Test: atest TextBoundsInfoTest
Change-Id: I5d30715882f142a79f5213195a1985a4036f357d

core/api/current.txt

@@ -55257,7 +55257,7 @@ package android.view.inputmethod {
 
   public final class TextBoundsInfoResult {
     ctor public TextBoundsInfoResult(int);
-    ctor public TextBoundsInfoResult(int, @NonNull android.view.inputmethod.TextBoundsInfo);
+    ctor public TextBoundsInfoResult(int, @Nullable android.view.inputmethod.TextBoundsInfo);
     method public int getResultCode();
     method @Nullable public android.view.inputmethod.TextBoundsInfo getTextBoundsInfo();
     field public static final int CODE_CANCELLED = 3; // 0x3

core/java/android/view/inputmethod/TextBoundsInfoResult.java

@@ -17,7 +17,6 @@
 package android.view.inputmethod;
 
 import android.annotation.IntDef;
-import android.annotation.NonNull;
 import android.annotation.Nullable;
 import android.graphics.RectF;
 
@@ -98,7 +97,7 @@ public final class TextBoundsInfoResult {
      * is null.
      */
     public TextBoundsInfoResult(@ResultCode int resultCode,
-            @NonNull TextBoundsInfo textBoundsInfo) {
+            @Nullable TextBoundsInfo textBoundsInfo) {
         if (resultCode == CODE_SUCCESS && textBoundsInfo == null) {
             throw new IllegalStateException("TextBoundsInfo must be provided when the resultCode "
                     + "is CODE_SUCCESS.");