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/right_panel/__snapshots__/RoomSummaryCard-test.tsx.snap

@@ -26,6 +26,7 @@ exports[`<RoomSummaryCard /> renders the room summary 1`] = `
           data-type="round"
           role="presentation"
           style="--cpd-avatar-size: 54px;"
+          title=""
         >
           !
         </span>

test/components/views/right_panel/__snapshots__/UserInfo-test.tsx.snap

@@ -102,6 +102,7 @@ exports[`<UserInfo /> with crypto enabled renders <BasicUserInfo /> 1`] = `
               data-type="round"
               role="button"
               style="--cpd-avatar-size: 230.39999999999998px;"
+              title=""
             >
               u
             </button>