fix(app): fix IllegalStateException by ensuring UI thread adapter notifications

Fix crash caused by modifying or notifying ListView adapter changes from background threads.

Author: jatezzz

termux/termux-app/src/main/java/com/termux/app/TermuxActivity.java

@@ -9,6 +9,7 @@
 import android.os.Build;
 import android.os.Bundle;
 import android.os.IBinder;
+import android.os.Looper;
 import android.view.ContextMenu;
 import android.view.ContextMenu.ContextMenuInfo;
 import android.view.Gravity;
@@ -973,7 +974,12 @@ public boolean isTerminalToolbarTextInputViewSelected() {
 
 
     public void termuxSessionListNotifyUpdated() {
-        TermuxExecutor.executeOnMain(() -> mTermuxSessionListViewController.notifyDataSetChanged());
+        if (mTermuxSessionListViewController == null) return;
+        if (Looper.myLooper() == Looper.getMainLooper()) {
+            mTermuxSessionListViewController.notifyDataSetChanged();
+        } else {
+            TermuxExecutor.executeOnMain(mTermuxSessionListViewController::notifyDataSetChanged);
+        }
     }
 
     public boolean isVisible() {