12 files declare their use of FieldFilteredMarkup in Drupal 10

FieldConfigEditForm.php in core/modules/field_ui/src/Form/FieldConfigEditForm.php

FieldFilteredMarkupTest.php in core/tests/Drupal/Tests/Core/Field/FieldFilteredMarkupTest.php

file.field.inc in core/modules/file/file.field.inc

Field module functionality for the File module.

ListFloatItem.php in core/modules/options/src/Plugin/Field/FieldType/ListFloatItem.php

ListIntegerItem.php in core/modules/options/src/Plugin/Field/FieldType/ListIntegerItem.php

ListStringItem.php in core/modules/options/src/Plugin/Field/FieldType/ListStringItem.php

NumberListField.php in core/modules/options/src/Plugin/views/argument/NumberListField.php

NumberWidget.php in core/lib/Drupal/Core/Field/Plugin/Field/FieldWidget/NumberWidget.php

OptionsDefaultFormatter.php in core/modules/options/src/Plugin/Field/FieldFormatter/OptionsDefaultFormatter.php

OptionsKeyFormatter.php in core/modules/options/src/Plugin/Field/FieldFormatter/OptionsKeyFormatter.php

OptionsWidgetBase.php in core/lib/Drupal/Core/Field/Plugin/Field/FieldWidget/OptionsWidgetBase.php

StringListField.php in core/modules/options/src/Plugin/views/argument/StringListField.php