#3453875: JSON Editor Submission Validation

Closes #3453875

added 3 commits

• 27cbc201 - Replace break elements with newline characters.
• 7ade2ef5 - Update failing test.
• 26efd6c8 - PHPCS cleanup.

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added 1 commit

• e5e4c64e - Update form state values during pattern updates.

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added 1 commit

• 459ac154 - Address cspell warnings.

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added 2 commits

• a97964b8 - 1 commit from branch project:9.1.x
• 17defa11 - Merge branch '9.1.x' into 3453875--submission-validation

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added 24 commits

• 17defa11...28e3200b - 23 commits from branch project:9.1.x
• fae62e5d - Merge branch '9.1.x' into 3453875--submission-validation

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