Refactor Mjolnir body to shared view (#33407)

* Refactor Mjolnir body to shared view

* Update compund css + add snapshot

* Remove from app, and add in shared components

* update css to fix axe fail issue

apps/web/res/css/_components.pcss

@@ -232,7 +232,6 @@
 @import "./views/messages/_MStickerBody.pcss";
 @import "./views/messages/_MediaBody.pcss";
 @import "./views/messages/_MessageActionBar.pcss";
-@import "./views/messages/_MjolnirBody.pcss";
 @import "./views/messages/_ReactionsRow.pcss";
 @import "./views/messages/_RoomAvatarEvent.pcss";
 @import "./views/messages/_TextualEvent.pcss";

apps/web/res/css/views/messages/_MjolnirBody.pcss

@@ -1,11 +0,0 @@
-/*
-Copyright 2024 New Vector Ltd.
-Copyright 2019 The Matrix.org Foundation C.I.C.
-
-SPDX-License-Identifier: AGPL-3.0-only OR GPL-3.0-only OR LicenseRef-Element-Commercial
-Please see LICENSE files in the repository root for full details.
-*/
-
-.mx_MjolnirBody {
-    opacity: 0.4;
-}