Pinned mode: expand comments area (move ViewPager out of NestedScrollView; fill remaining height)

Author: XYW16

app/src/main/res/layout/fragment_video_detail.xml

@@ -812,7 +812,9 @@
                 <androidx.viewpager.widget.ViewPager
                     android:id="@+id/pinned_view_pager"
                     android:layout_width="match_parent"
-                    android:layout_height="400dp" />
+                    android:layout_height="0dp"
+                    android:layout_weight="1"
+                    />
 
             </LinearLayout>