chore(call): pin element-call-embedded 0.25.0-lotus.22 (#43)

lotus.22 draws the "Share your screen?" prompt inside the call frame on
request and drops the corner button. Verified against the published
package: no-delegation (Firefox path) cross- and same-origin — bar button,
in-frame prompt, Cancel, Share → screenshare tracks, bar Stop; Chromium
unchanged; picture-in-picture prompt fits and Share works; room policy
hides the button and refuses the prompt.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01PPmy3tPq869XDW4njjVaKA

package.json

@@ -108,7 +108,7 @@
   },
   "devDependencies": {
     "@axe-core/playwright": "4.13.0",
-    "@lotusguild/element-call-embedded": "0.25.0-lotus.21",
+    "@lotusguild/element-call-embedded": "0.25.0-lotus.22",
     "@playwright/test": "1.63.0",
     "@rollup/plugin-inject": "5.0.5",
     "@rollup/plugin-wasm": "6.2.2",