Bug 1483157 [wpt PR 12469] - Update interfaces/css-paint-api.idl, a=testonly

Automatic update from web-platform-testsUpdate interfaces/css-paint-api.idl (#12469)

Copied by https://github.com/foolip/wpt-idl-importer from:
https://github.com/tidoust/reffy-reports/blob/bd06a9e/whatwg/idl/css-paint-api.idl
--

wpt-commits: 5831a844ca9a9d5121fd4c45308e88a02d40ecf6
wpt-pr: 12469

testing/web-platform/meta/MANIFEST.json

@@ -605530,7 +605530,7 @@
    "support"
   ],
   "interfaces/css-paint-api.idl": [
-   "442bbfac1585768d6df64b48960f35a41b7546be",
+   "c636e2e7d3771fa4d0fb0df06088885552da6e00",
    "support"
   ],
   "interfaces/css-properties-values-api.idl": [

testing/web-platform/tests/interfaces/css-paint-api.idl

@@ -1,9 +1,9 @@
 // GENERATED CONTENT - DO NOT EDIT
-// Content of this file was automatically extracted from the
-// "CSS Painting API Level 1" spec.
-// See: https://drafts.css-houdini.org/css-paint-api-1/
+// Content was automatically extracted by Reffy into reffy-reports
+// (https://github.com/tidoust/reffy-reports)
+// Source: CSS Painting API Level 1 (https://drafts.css-houdini.org/css-paint-api-1/)
 
-partial interface CSS {
+partial namespace CSS {
     [SameObject] readonly attribute Worklet paintWorklet;
 };