Fixes read receipt avatar offset (#11483)

* Fixes read receipt avatar offset

Fixes https://github.com/vector-im/element-web/issues/26059

* Fix avatar collapsing in thread list

Fixes https://github.com/vector-im/element-web/issues/26064

* Make composer pills use new avatar design

Fixes https://github.com/vector-im/element-web/issues/26067

* Update snapshots

* Update UserInfo snapshot

* Update HTMLExport snapshot

* Fixes avatar placeholder font

Fixes https://github.com/vector-im/element-web/issues/26061

test/components/views/spaces/__snapshots__/AddExistingToSpaceDialog-test.tsx.snap

@@ -31,6 +31,7 @@ exports[`<AddExistingToSpaceDialog /> looks as expected 1`] = `
             data-testid="avatar-img"
             data-type="square"
             style="--cpd-avatar-size: 40px;"
+            title=""
           >
             <img
               alt=""