Update toast styles, improve incoming call notifications (#33043)

* Update design of incoming call notifications

* Make toast show avatars of group call participants

* Further expand test coverage for call notifications

* Update screenshots

* Update screenshots

* Delete unused variables

* Upgrade Element Call to v0.19.2

For the new group call intents.

* Consolidate some branches

* Apply Compound spacing variables a little more

* Fix lints

* Exclude Element Call assets from being re-minified to fix build

apps/web/webpack.config.ts

@@ -217,10 +217,16 @@ export default (env: string, argv: Record<string, any>): webpack.Configuration =
             minimizer: enableMinification
                 ? [
                       new TerserPlugin({
-                          // Already minified and includes an auto-generated license comment
-                          // that the plugin would otherwise pointlessly extract into a separate
-                          // file. We add the actual license using CopyWebpackPlugin below.
-                          exclude: "jitsi_external_api.min.js",
+                          exclude: [
+                              // Already minified and includes an auto-generated license comment
+                              // that the plugin would otherwise pointlessly extract into a separate
+                              // file. We add the actual license using CopyWebpackPlugin below.
+                              "jitsi_external_api.min.js",
+                              // Already minified by Element Call's build process (and Terser has
+                              // issues with some Unicode characters found within)
+                              // https://github.com/terser/terser/issues/1677
+                              "widgets/element-call/",
+                          ],
                       }),
                       new CssMinimizerPlugin(),
                   ]