✨ Use the design's orphan icon in the broken copy pill

Add the orphan icon (a broken chain link) to the DS icon set and show
it in the component pill of copies whose main is missing, instead of
broken-link, which the token pills and shortcuts keep using.

Relates to #12134

AI-assisted-by: claude-opus-5-5

frontend/resources/images/icons/orphan.svg

@@ -0,0 +1,3 @@
+<svg xmlns="http://www.w3.org/2000/svg" fill="none" stroke="currentColor" viewBox="0 0 16 16" stroke-linecap="round" stroke-linejoin="round">
+    <path d="M10.33,10.507L11.543,10.51L11.536,10.503C12.915,10.479,14.015,9.341,13.992,7.961C13.968,6.614,12.882,5.528,11.535,5.504L10.323,5.5M5.673,5.497L4.464,5.497C3.084,5.521,1.985,6.659,2.007,8.039C2.032,9.386,3.118,10.472,4.464,10.496L5.673,10.496M10.121,3.05L9.061,4.111M5.879,3.05L6.939,4.111M6.939,11.889L5.879,12.95M9.061,11.889L10.121,12.95"/>
+</svg>

frontend/src/app/main/ui/ds/foundations/assets/icon.cljs

@@ -212,6 +212,7 @@
 (def ^:icon-id msg-warning "msg-warning")
 (def ^:icon-id number "number")
 (def ^:icon-id open-link "open-link")
+(def ^:icon-id orphan "orphan")
 (def ^:icon-id padding-bottom "padding-bottom")
 (def ^:icon-id padding-extended "padding-extended")
 (def ^:icon-id padding-left "padding-left")

frontend/src/app/main/ui/workspace/sidebar/options/menus/component.cljs

@@ -907,7 +907,7 @@
       (when ^boolean is-broken
         [:> tooltip* {:content (tr "workspace.options.component.broken")
                       :class (stl/css :pill-btn-broken)}
-         [:> icon* {:icon-id i/broken-link
+         [:> icon* {:icon-id i/orphan
                     :size "m"}]])]
 
      (when menu-entries?