New room list: remove color gradient in space panel (#29721)

* feat: remove blur effect in space

* feat: remove user menu border and align

* test(e2e): update snapshots

src/components/structures/LoggedInView.tsx

@@ -724,9 +724,11 @@ class LoggedInView extends React.Component<IProps, IState> {
                         <div className="mx_LeftPanel_outerWrapper">
                             <LeftPanelLiveShareWarning isMinimized={shouldUseMinimizedUI || false} />
                             <div className={leftPanelWrapperClasses}>
-                                <BackdropPanel blurMultiplier={0.5} backgroundImage={this.state.backgroundImage} />
+                                {!useNewRoomList && (
+                                    <BackdropPanel blurMultiplier={0.5} backgroundImage={this.state.backgroundImage} />
+                                )}
                                 <SpacePanel />
-                                <BackdropPanel backgroundImage={this.state.backgroundImage} />
+                                {!useNewRoomList && <BackdropPanel backgroundImage={this.state.backgroundImage} />}
                                 <div
                                     className="mx_LeftPanel_wrapper--user"
                                     ref={this._resizeContainer}