feature(room preview): Add option to forget room, improve the room preview screen for banned rooms.

Some internal refactoring was done too:
- Remove RoomInfo.isPublic to only use JoinRule.
- Also take into account restricted access rooms for previews.

features/roomdetails/impl/src/main/kotlin/io/element/android/features/roomdetails/impl/RoomDetailsStateProvider.kt

@@ -64,6 +64,7 @@ fun aDmRoomMember(
     normalizedPowerLevel: Long = powerLevel,
     isIgnored: Boolean = false,
     role: RoomMember.Role = RoomMember.Role.USER,
+    membershipChangeReason: String? = null,
 ) = RoomMember(
     userId = userId,
     displayName = displayName,
@@ -74,6 +75,7 @@ fun aDmRoomMember(
     normalizedPowerLevel = normalizedPowerLevel,
     isIgnored = isIgnored,
     role = role,
+    membershipChangeReason = membershipChangeReason
 )
 
 fun aRoomDetailsState(

features/roomdetails/impl/src/main/kotlin/io/element/android/features/roomdetails/impl/members/RoomMemberListStateProvider.kt

@@ -126,6 +126,7 @@ fun aRoomMember(
     normalizedPowerLevel: Long = 0L,
     isIgnored: Boolean = false,
     role: RoomMember.Role = RoomMember.Role.USER,
+    membershipChangeReason: String? = null,
 ) = RoomMember(
     userId = userId,
     displayName = displayName,
@@ -136,6 +137,7 @@ fun aRoomMember(
     normalizedPowerLevel = normalizedPowerLevel,
     isIgnored = isIgnored,
     role = role,
+    membershipChangeReason = membershipChangeReason,
 )
 
 fun aRoomMemberList() = persistentListOf(