Add backgroundSegmentationMask to VideoFrameMetadata registry

SHA: 2fcb558
Reason: push, by padenot

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

Author: eehakkin

video_frame_metadata_registry.html

@@ -5,9 +5,9 @@
   <title>WebCodecs VideoFrame Metadata Registry</title>
   <meta content="ED" name="w3c-status">
   <link href="https://www.w3.org/StyleSheets/TR/2021/W3C-ED" rel="stylesheet">
-  <meta content="Bikeshed version b25686b9f, updated Fri Mar 14 14:15:20 2025 -0700" name="generator">
+  <meta content="Bikeshed version 9a7a6709a, updated Tue May 27 16:45:34 2025 -0700" name="generator">
   <link href="https://www.w3.org/TR/webcodecs-video-frame-metadata-registry/" rel="canonical">
-  <meta content="dc3cf30a81d6532856625125db9932af6013c842" name="revision">
+  <meta content="2fcb55883a2ed677f80e203633658835bd4be2e2" name="revision">
   <meta content="dark light" name="color-scheme">
   <link href="https://www.w3.org/StyleSheets/TR/2021/dark.css" media="(prefers-color-scheme: dark)" rel="stylesheet" type="text/css">
 <style>/* Boilerplate: style-autolinks */
@@ -569,7 +569,7 @@
   <div class="head">
    <p data-fill-with="logo"><a class="logo" href="https://www.w3.org/"> <img alt="W3C" height="48" src="https://www.w3.org/StyleSheets/TR/2021/logos/W3C" width="72"> </a> </p>
    <h1 class="p-name no-ref" id="title">WebCodecs VideoFrame Metadata Registry</h1>
-   <p id="w3c-state"><a href="https://www.w3.org/standards/types/#ED">Editor’s Draft</a>, <time class="dt-updated" datetime="2025-04-03">3 April 2025</time></p>
+   <p id="w3c-state"><a href="https://www.w3.org/standards/types/#ED">Editor’s Draft</a>, <time class="dt-updated" datetime="2025-06-09">9 June 2025</time></p>
    <details open>
     <summary>More details about this document</summary>
     <div data-fill-with="spec-metadata">
@@ -686,6 +686,9 @@ <h2 class="heading settled" data-level="2" id="videoframemetadata-members"><span
      <tr>
       <td>backgroundBlur
       <td><a href="https://w3c.github.io/mediacapture-extensions/#background-blur-effect-status">Background blur effect status</a>
+     <tr>
+      <td>backgroundSegmentationMask
+      <td><a href="https://w3c.github.io/mediacapture-extensions/#background-segmentation-mask">Background segmentation mask</a>
    </table>
    <h2 class="heading settled" data-level="3" id="privacy-considerations"><span class="secno">3. </span><span class="content">Privacy Considerations</span><a class="self-link" href="#privacy-considerations"></a></h2>
    <p>Please refer to the section <a href="https://w3c.github.io/webcodecs/#privacy-considerations">Privacy