Telephone field does not support setting a custom size of the input field

Applied changes in comment #78 to the 10.1.x branch of Drupal and then added the remarks made in #81.

 ../vendor/bin/phpunit modules/telephone/tests/*
PHPUnit 9.5.28 by Sebastian Bergmann and contributors.

Testing /app/build/core/modules/telephone/tests/src
.............                                                     13 / 13 (100%)

Time: 02:18.388, Memory: 10.00 MB

OK (13 tests, 133 assertions)

Applied changes in comment #78 to the 10.1.x branch of Drupal and then added the remarks made in #81. Also included updated tests for Drupal 6 phone field widget migration.

 ../vendor/bin/phpunit ./modules/field/tests/src/Kernel/Migrate/d6/MigrateFieldWidgetSettingsTest.php
PHPUnit 9.5.28 by Sebastian Bergmann and contributors.

Testing Drupal\Tests\field\Kernel\Migrate\d6\MigrateFieldWidgetSettingsTest
.                                                                   1 / 1 (100%)

Time: 00:14.362, Memory: 10.00 MB

OK (1 test, 42 assertions)

 ../vendor/bin/phpunit modules/telephone/tests/*
PHPUnit 9.5.28 by Sebastian Bergmann and contributors.

Testing /app/build/core/modules/telephone/tests/src
.............                                                     13 / 13 (100%)

Time: 02:20.311, Memory: 10.00 MB

OK (13 tests, 133 assertions)

Issue summary can be updated to include the default issue default.

Also this will need an upgrade path as it is adding a new config setting to existing fields. Upgrade path should have a simple test case also.

Thanks.

Added the template to the issue summary, still needs filling in