Some Post-demo Cleanups (#200)

* Remove redundant string

* Use placeholder avatar on home screen

* Add initial home screen ui test

* Fix settings screen PR remarks

* Remove UIKit alert from home screen sign out

* Remove UIKit alert from soft logout clear all data

* Add reference screenshots for home screen UI tests

* Formatting fixes

* Add clearing room method to client proxy

* Clear room proxies on screen dismiss

* Fix retain cycle in room view model

* Do not go into authentication state immediately

* Define sizes for user and room avatars on different screens

* Use defined avatar sizes everywhere

* Disable image disk caching

* Rename rounded corner shape

* Fix text color of placeholder avatars

* Fix PR reviews on formatted body text

* Fix merge conflict

* Remove shouldShowSenderDetails everywhere and just use it from inGroupState

* Remove redundant linter disablings

* Fix PR remarks

* Rename media provider size parameter

ElementX/Sources/Screens/Authentication/SoftLogout/View/SoftLogoutScreen.swift

@@ -21,6 +21,8 @@ struct SoftLogoutScreen: View {
     
     // MARK: Private
 
+    @State private var showingClearDataConfirmation = false
+
     /// The focus state of the password text field.
     @FocusState private var isPasswordFocused: Bool
 
@@ -150,6 +152,14 @@ struct SoftLogoutScreen: View {
             }
             .buttonStyle(.elementAction(.xLarge, color: .element.alert))
             .accessibilityIdentifier("clearDataButton")
+            .alert(ElementL10n.softLogoutClearDataDialogTitle,
+                   isPresented: $showingClearDataConfirmation) {
+                Button(ElementL10n.actionSignOut,
+                       role: .destructive,
+                       action: clearData)
+            } message: {
+                Text(ElementL10n.softLogoutClearDataDialogContent)
+            }
         }
     }