Add formatting removal on paste for search

Closes #5912

Author: imericxu

app/src/main/java/org/schabi/newpipe/fragments/list/search/SearchFragment.java

@@ -9,6 +9,7 @@
 import android.text.Html;
 import android.text.TextUtils;
 import android.text.TextWatcher;
+import android.text.style.CharacterStyle;
 import android.util.Log;
 import android.view.KeyEvent;
 import android.view.LayoutInflater;
@@ -588,6 +589,12 @@ public void onTextChanged(final CharSequence s, final int start,
 
             @Override
             public void afterTextChanged(final Editable s) {
+                final CharacterStyle[] toBeRemovedSpans = s.getSpans(
+                        0, s.length(), CharacterStyle.class
+                );
+                for (final CharacterStyle toBeRemovedSpan : toBeRemovedSpans) {
+                    s.removeSpan(toBeRemovedSpan);
+                }
                 final String newText = searchEditText.getText().toString();
                 suggestionPublisher.onNext(newText);
             }