Add an `editableRoot` block support for native cross-block selection #161804

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JavaScript (Node.js 20) 3/4	2m 38s
JavaScript Date Tests (Node.js 20)	56s
Build JavaScript assets for PHP unit tests	1m 56s
Compute previous WordPress version	4s
JavaScript (Node.js 20) 4/4	2m 59s
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PHP coding standards	26s
PHP 7.4 on Linux	2m 26s
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PHP	3s
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