Text fields don't need a default value, and dropping this one
solves an issue with a changed DB field schema definition raised
in doctrine/dbal version 3.4.0.
It is the only text field with default value both in ext:styleguide
and in TYPO3 Core, so it is probably safe to remove the default value
and leave the handling of text fields inside database systems to
doctrine/dbal.
Text fields don't need a default value, and dropping this one solves an issue with a changed DB field schema definition raised in doctrine/dbal version 3.4.0.
It is the only text field with default value both in ext:styleguide and in TYPO3 Core, so it is probably safe to remove the default value and leave the handling of text fields inside database systems to doctrine/dbal.