Update copyright headers and change comments

Author: Ecomont

app/src/main/java/org/schabi/newpipe/player/ui/MainPlayerUi.java

@@ -146,10 +146,6 @@ public void setupAfterIntent() {
         }
     }
 
-    // `protected` matches the visibility declared in VideoPlayerUi.kt. The Kotlin parent used to
-    // declare this as `internal`, which the Kotlin compiler mangles to a JVM-private name that
-    // Java cannot see, so this class could not compile. Changing to `protected` gives the method
-    // a stable, unmangled JVM name accessible from Java subclasses.
     @Override
     protected BasePlayerGestureListener buildGestureListener() {
         return new MainPlayerGestureListener(this);

app/src/main/java/org/schabi/newpipe/player/ui/PopupPlayerUi.java

@@ -101,9 +101,6 @@ public void setupAfterIntent() {
         initPopupCloseOverlay();
     }
 
-    // Same reason as MainPlayerUi: `protected` is required so this Java class can override the
-    // method declared in the Kotlin parent (VideoPlayerUi). Using `internal` in Kotlin produces
-    // a mangled JVM name that Java subclasses cannot reference.
     @Override
     protected BasePlayerGestureListener buildGestureListener() {
         return new PopupPlayerGestureListener(this);

app/src/main/java/org/schabi/newpipe/views/ChaptersSeekBar.kt

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2026 NewPipe e.V. <https://newpipe-ev.de>
+ * SPDX-FileCopyrightText: 2026 NewPipe contributors <https://newpipe.net>
  * SPDX-License-Identifier: GPL-3.0-or-later
  */
 package org.schabi.newpipe.views

app/src/main/java/org/schabi/newpipe/views/FocusAwareSeekBar.kt

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2026 NewPipe e.V. <https://newpipe-ev.de>
+ * SPDX-FileCopyrightText: 2026 NewPipe contributors <https://newpipe.net>
  * SPDX-License-Identifier: GPL-3.0-or-later
  */
 package org.schabi.newpipe.views