fix(#6105): also close floating picker on breakpoint-crossing resize that reveals a drawer

Codex found a sibling of the swipe-stacking edge: a direct landscape/tablet->phone
resize can re-reveal an already-open mobile sidebar or workspace panel under the
body-reparented picker (z-200 siblings, no click to trigger outside-close). The
window resize handler now guardedly closes+restores the picker before re-syncing
drawer state, gated on entering phone width AND a drawer/panel actually being open,
so ordinary keyboard/URL-bar reflows don't dismiss the picker mid-use.

static/boot.js

@@ -2482,6 +2482,23 @@ function applyEmptyStateSuggestionPref(){
 }
 
 window.addEventListener('resize',()=>{
+  // #6105/#6080: the floating phone model picker is a <body> child at z-index:200,
+  // the same level as the mobile sidebar drawer and the workspace panel. A direct
+  // landscape/tablet→phone resize can re-reveal an already-open drawer/panel
+  // *underneath* the picker (no click fires, so outside-click-close doesn't run).
+  // Close + restore the picker before we re-sync drawer state, but only when a
+  // phone-width layout will actually surface one of those z-200 siblings — so an
+  // ordinary keyboard/URL-bar reflow doesn't dismiss the picker mid-use.
+  try{
+    if(typeof closeModelDropdown==='function' && !_isDesktopWidth()){
+      const dd=document.getElementById('composerModelDropdown');
+      if(dd&&dd.classList.contains('open')){
+        const drawerOpen=!!document.querySelector('.sidebar.mobile-open');
+        const panelOpen=(typeof _workspacePanelMode!=='undefined'&&_workspacePanelMode&&_workspacePanelMode!=='closed');
+        if(drawerOpen||panelOpen) closeModelDropdown();
+      }
+    }
+  }catch(_){}
   _syncWorkspacePanelInlineWidth();
   syncWorkspacePanelState();
   if(!window.visualViewport) _forceMobileViewportReflow();