…-code-component-style-fix

Use `symmetricDifference` instead of `difference`.
- `difference` only returns values that are present in the edited attributes, but not in the originally fetched attribute vales. This always ends up returning an empty array.
- I used `symmetricDifference` as it returns an intersection of `difference` from both sides and works perfectly for this use case, as the original attributes never change.

- Original code creates a reference copy of `$doc` into `$work` which means that editing values of `$work` changes the values in `$doc`.
- Fix this behaviour by creating a deep clone of `$doc` into `$work`, so underlying values aren't cross-referenced.

Instead of cramming all the steps for correct deep cloning, I split the implementation into 4 distinct steps:
- define they keys to exclude
- filtering the keys
- reduce filtered keys into an object
- returning a writable deep clone

Fix 5295 code component style fix

…document-after-array-value-deletion

fixed issue that didn't allow a user to update a document when deleting elements in an array attribute

1. Fix typo in labels placeholder
2. Reorder tags and helper text

…els-design-corrections