fix: scope the forms reset so it stops restyling every checkbox on the page

[arifulhoque7]

Problem

Reported: "Stylesheets from your plugin is loaded everywhere on the site. Slows down the site and break all checkboxes on my all websites." Details and measurements: weDevsOfficial/wedocs-pro#433.

@tailwindcss/forms writes its reset as bare element rules (input:where([type='checkbox']) { appearance: none; ... }). Neither the important scope nor tailwindcss-scoped-preflight reaches plugin base rules, so on any page where one of these stylesheets loads, every checkbox, radio, select and text field on the page is restyled, not just the ones in weDocs markup. #364 already stops the block stylesheets loading site-wide; this fixes what they do on the pages that still load them.

Fix

tailwind.scoped-forms.js runs the forms plugin unchanged and appends the container scope to every selector it adds, the same :where(<container>, <container> *) form the scoped preflight already uses. :where() adds no specificity, so weDocs' own fields keep the weight they had.

Wired into the admin bundle (src/assets/css/index.css) and the four Tailwind block stylesheets (Breadcrumb, Sidebar, DocNavigation, QuickSearch), scoped to .wedocs-document. The new file is listed in .distignore; the zip uses an allowlist and never included root tooling files.

Evidence (WordPress 7.1.2, Hello Elementor, both release builds installed from zip)

• CSS: 28 forms rules per affected file now carry the scope; every other rule is byte-identical and rule counts are unchanged. Zero unscoped form rules remain.
• Outside weDocs: an injected checkbox on a single doc / a page with a QuickSearch block went from appearance:none, 16x16, blue fill to native 13x13. In wp-admin the remaining 16px styling is core's own (identical with weDocs' sheets disabled).
• Inside weDocs: 19 screenshots (single doc, blocks page, docs home, QuickSearch modal, assistant widget, docs/glossary/FAQ/changelog admin, 8 settings tabs, a post with a form) compared pixel by pixel before and after: 18 identical, 1 with 5 pixels at 3/255 (anti-aliasing).

Part of weDevsOfficial/wedocs-pro#433 (Pro companion PR fixes frontend.css). Independent of the Pro PR, no merge order.

https://claude.ai/code/session_01NYhesBBDCSe89DpyPiynVN