Move checkbox input outside of the wrapping `label` element.

[kkmuffme]

[Edited to change the intent of the ticket. Original intent below.]

<label for="dashboard_right_now-hide">
	<input class="hide-postbox-tog" name="dashboard_right_now-hide" type="checkbox" id="dashboard_right_now-hide" value="dashboard_right_now"/>At a Glance
</label>

The for= is redundant and can be removed, since the input is wrapped in the label
There are a couple other ones there with the same issue

Trac ticket: https://core.trac.wordpress.org/ticket/62548

I’m not entirely sure if it’s considered best practice to omit the for attribute from a <label> tag when it wraps an <input> element. While the association between the label and input is implicit in this case, I’d appreciate confirmation on whether this approach aligns with accessibility and coding standards.

If this is acceptable, you can proceed with this PR fix. Thank you!

[sabernhardt]

As @afercia noted in ticket:47141#comment:1, the ​accessibility coding standards in 2018 said that the labels should not combine both methods.

Existing code uses a mixture of explicitly and implicitly labeled fields, but all new code must use an explicitly associated <label> element (using for/id attributes and not wrapping the form control).

[34991] removed the for attribute in the implicitly associated hide-column-tog checkbox labels with list tables, but other screen options still have the for attribute:

• the hide-postbox-tog checkboxes on the Dashboard
• wp_welcome_panel-hide on the Dashboard
• editor-expand-toggle in the Classic Editor

Removing the for attributes from these implicitly labeled checkboxes would be simple. If switching to explicit association, the input/label pairs should still have a wrapper span to make sure they stay together when they appear on multiple lines.

[joedolson]

If we change this, it should be to remove the wrapping label, so that the only label relationship is the explicit one. This is a relatively low priority change, but in most cases not complex. However, removing wrapping label elements can have significant impact on styling (e.g., if there's a flex or grid context involving that label), so they need to be handled carefully in individual cases.

But in no circumstances should we elect to remove the for attributes so that we only use implicit labeling.

[joedolson]

This is referring to the Screen elements form in screen options. There's no impact on styles by moving the input out of the wrapping label, so we might as well do that.

[benazeer]

Thank you for pointing that out.

Since there’s no impact on styles by moving the input out of the wrapping label, it makes sense to proceed with this change. This adjustment ensures better markup semantics without affecting the visual output.

I have updated this in recent commit in this PR ​https://github.com/WordPress/wordpress-develop/pull/7887

Let me know if there's anything else that needs attention.