Change label "Block description" to "Block type"

Change label "Block description" to "Block type" in the edit form of the Layout Builder inline blocks.

Closes #3441108

added 2 commits

• 9a49e069 - Change label "Block description" to "Block type" in the edit form of the...
• d9626113 - Remove hook. Code was moved to Drupal\layout_builder\Form\ConfigureBlockFormBase::doBuildForm.

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added 1 commit

• 065714fb - Remove unused TranslatableMarkup import.

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changed target branch from 10.2.x to 11.x

changed target branch from 11.x to 10.3.x