Move Flex & Box component into shared component folder (#30357)

* refactor: move Flex component in shared components

* refactor: update imports

* refactor: remove Flex pcss file

* fix: Flex component css override

* test: update snapshots

* fix: html export

* chore: add css module support to jest

* chore: keep old copyright

* refactor: change `mx_Flex` in `ErrorView` to `mx_ErrorView_flexContainer`

* test: update snapshots

* refactor: move Box component in shared components

* refactor: update import and css override

* test: update snapshots

res/css/_components.pcss

@@ -53,8 +53,6 @@
 @import "./components/views/settings/shared/_SettingsSubsectionHeading.pcss";
 @import "./components/views/spaces/_QuickThemeSwitcher.pcss";
 @import "./components/views/typography/_Caption.pcss";
-@import "./components/views/utils/_Box.pcss";
-@import "./components/views/utils/_Flex.pcss";
 @import "./compound/_Icon.pcss";
 @import "./compound/_SuccessDialog.pcss";
 @import "./structures/_AutoHideScrollbar.pcss";

res/css/components/views/utils/_Box.pcss

@@ -1,19 +0,0 @@
-/*
-Copyright 2024 New Vector Ltd.
-Copyright 2023 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_Box--flex {
-    flex: var(--mx-box-flex, unset);
-}
-
-.mx_Box--shrink {
-    flex-shrink: var(--mx-box-shrink, unset);
-}
-
-.mx_Box--grow {
-    flex-grow: var(--mx-box-grow, unset);
-}

res/css/components/views/utils/_Flex.pcss

@@ -1,16 +0,0 @@
-/*
-Copyright 2024 New Vector Ltd.
-Copyright 2023 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_Flex {
-    display: var(--mx-flex-display, unset);
-    flex-direction: var(--mx-flex-direction, unset);
-    align-items: var(--mx-flex-align, unset);
-    justify-content: var(--mx-flex-justify, unset);
-    gap: var(--mx-flex-gap, unset);
-    flex-wrap: var(--mx-flex-wrap, unset);
-}

res/css/structures/ErrorView.pcss

@@ -50,7 +50,7 @@ Please see LICENSE files in the repository root for full details.
         color: var(--cpd-color-text-secondary);
     }
 
-    .mx_Flex {
+    .mx_ErrorView_flexContainer {
         margin: 0 auto;
         max-width: max-content;
         flex-wrap: wrap;

res/css/views/right_panel/_RoomSummaryCard.pcss

@@ -32,7 +32,7 @@ Please see LICENSE files in the repository root for full details.
         padding: 0 12px;
         color: var(--cpd-color-text-secondary);
 
-        .mx_Box {
+        .mx_RoomSummaryCard_topic_box {
             width: 100%;
         }
 

res/css/views/right_panel/_UserInfo.pcss

@@ -108,11 +108,6 @@ Please see LICENSE files in the repository root for full details.
             margin: 0;
             font-size: $font-20px;
             line-height: $font-25px;
-
-            /* E2E icon wrapper */
-            .mx_Flex > span {
-                display: inline-block;
-            }
         }
 
         .mx_UserInfo_profile_name {