Issue #2361797 by rpayanm, Palashvijay4O, er.pushpinderrana: Remove usage of drupal_strlen().

core/lib/Drupal/Core/Mail/MailFormatHelper.php

core/lib/Drupal/Core/TypedData/Plugin/DataType/ItemList.php

core/lib/Drupal/Core/TypedData/Plugin/DataType/Map.php

core/modules/filter/filter.module

core/modules/image/image.field.inc

core/modules/menu_ui/src/Tests/MenuTest.php

...les/options/src/Plugin/Field/FieldType/ListStringItem.php

core/modules/responsive_image/responsive_image.module

core/modules/search/search.module

core/modules/search/src/SearchQuery.php

core/modules/search/src/Tests/SearchSimplifyTest.php

core/modules/system/src/Tests/Mail/HtmlToTextTest.php

core/modules/text/text.module

core/modules/user/src/AccountForm.php

...gin/Validation/Constraint/UserNameConstraintValidator.php

core/modules/user/user.module

.../modules/views/src/Plugin/views/field/FieldPluginBase.php

core/modules/views/src/Plugin/views/filter/InOperator.php

core/modules/views_ui/views_ui.module