[SB][ComposeIcons] Move legacy SystemStatusIcons

Breaks out the android view for legacy status icons
into a public composable and uses that in the
ShadeHeader.
The SystemStatusIconsLegacy composable will also
be used in the DesktopStatusBar.

Bug: 408001821
Test: manual
Flag: com.android.systemui.status_bar_system_status_icons_in_compose
Change-Id: I8a6b3e866e486dd8843c1459b58a9645c993f57c