Bug fixes

3219916 - Fix an error on non-node pages due to a duplicated required key

Fixes Form mode manager - Moderately critical - Access bypass - SA-CONTRIB-2021-023.

Compatible with Drupal 9, other cleanups and fixes.

- Fix childRowImmediate responsive option not working.
- Fix missing expandable row indicator on childRow responsive option.
- Hide description field (if present) and replace with downloadText field that appears within settings.

Changes since 1.0.0-alpha9:

• #3208348: Verify if there's content before exporting by huzooka, pcambra

Various bug fixes.

• Issue #3218194: Added Vertical and Horizontal alignments to section styling settings for Varbase Layout Builder ~10
  

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• Issue #3210657: Added Boxed options ( Wide, Medium, Narrow, Tiny ) in Varbase Layout Builder ~10
  

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