Update TrackSelectionDialogBuilder to use androidx compat Dialog.

This ensure style themes are correctly applied.

issue:#7357
PiperOrigin-RevId: 313145345

RELEASENOTES.md

@@ -194,6 +194,8 @@
     *   Add `showScrubber` and `hideScrubber` methods to DefaultTimeBar.
     *   Move logic of prev, next, fast forward and rewind to ControlDispatcher
         ([#6926](https://github.com/google/ExoPlayer/issues/6926)).
+    *   Update `TrackSelectionDialogBuilder` to use androidx compat Dialog
+        ([#7357](https://github.com/google/ExoPlayer/issues/7357)).
 *   Metadata: Add minimal DVB Application Information Table (AIT) support
     ([#6922](https://github.com/google/ExoPlayer/pull/6922)).
 *   Cast extension: Implement playlist API and deprecate the old queue

library/ui/build.gradle

@@ -40,6 +40,7 @@ dependencies {
     implementation project(modulePrefix + 'library-core')
     api 'androidx.media:media:' + androidxMediaVersion
     implementation 'androidx.annotation:annotation:' + androidxAnnotationVersion
+    implementation 'androidx.appcompat:appcompat:' + androidxAppCompatVersion
     compileOnly 'org.checkerframework:checker-qual:' + checkerframeworkVersion
     compileOnly 'org.jetbrains.kotlin:kotlin-annotations-jvm:' + kotlinAnnotationsVersion
     testImplementation project(modulePrefix + 'testutils')

library/ui/src/main/java/com/google/android/exoplayer2/ui/TrackSelectionDialogBuilder.java

@@ -15,12 +15,12 @@
  */
 package com.google.android.exoplayer2.ui;
 
-import android.app.AlertDialog;
 import android.app.Dialog;
 import android.content.Context;
 import android.view.LayoutInflater;
 import android.view.View;
 import androidx.annotation.Nullable;
+import androidx.appcompat.app.AlertDialog;
 import com.google.android.exoplayer2.source.TrackGroupArray;
 import com.google.android.exoplayer2.trackselection.DefaultTrackSelector;
 import com.google.android.exoplayer2.trackselection.DefaultTrackSelector.SelectionOverride;