[Adaptive] [Side Sheet] Made SheetDialog abstract base class and Shee…

…t interface package-private.

PiperOrigin-RevId: 492534084
(cherry picked from commit 0f9c6fc)

lib/java/com/google/android/material/sidesheet/Sheet.java

@@ -27,8 +27,7 @@
  * Interface for sheet constants and {@code IntDefs} to be shared between the different {@link
  * Sheet} implementations.
  */
-public interface Sheet {
-
+interface Sheet {
   /** The sheet is dragging. */
   int STATE_DRAGGING = 1;
 

lib/java/com/google/android/material/sidesheet/SheetDialog.java

@@ -18,7 +18,6 @@
 
 import com.google.android.material.R;
 
-import static androidx.annotation.RestrictTo.Scope.LIBRARY_GROUP;
 
 import android.content.Context;
 import android.content.res.TypedArray;
@@ -37,7 +36,6 @@
 import androidx.annotation.LayoutRes;
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
-import androidx.annotation.RestrictTo;
 import androidx.annotation.StyleRes;
 import androidx.coordinatorlayout.widget.CoordinatorLayout;
 import androidx.core.view.AccessibilityDelegateCompat;
@@ -48,11 +46,8 @@
 /**
  * Base class for {@link android.app.Dialog}s styled as a sheet, to be used by sheet dialog
  * implementations such as side sheets and bottom sheets.
- *
- * @hide For internal use only.
  */
-@RestrictTo(LIBRARY_GROUP)
-public abstract class SheetDialog extends AppCompatDialog {
+abstract class SheetDialog extends AppCompatDialog {
 
   private static final int COORDINATOR_LAYOUT_ID = R.id.coordinator;
   private static final int TOUCH_OUTSIDE_ID = R.id.touch_outside;