Add config validation for weights (blocks, filters, etc. all use weights)

MR created.

CR created: https://www.drupal.org/node/3426319 → .

This hard-blocks 📌 Fix Block config entity type config schema violations: weight, property Postponed but soft-blocks many more issues, for example 📌 [PP-2] Make FilterFormat config entities fully validatable Postponed , 📌 Add config validation for workflow entities. Active and many other yet-to-be-created issues. Weights are pervasive, so standardizing them on a single way to validate them would instantly help much more config reach a higher degree of validatability. Hence bumping to priority.

Rerunning the failing javascript test. All green now

The weight type makes a lot of sense, actually been eyeing this ticket for my contrib modules to get validatable.

Appears all instances have label: Weight that was of type integer has been replaced

Change has test coverage too, can be seen https://git.drupalcode.org/issue/drupal-3426309/-/jobs/1015331

The PHP_MAX_INT was slightly alarming, but what else could we set it to. Looks good. Committed/pushed to 11.x and cherry-picked to 10.3.x, thanks!

Automatically closed - issue fixed for 2 weeks with no activity.