[SB][Screen Chips] Disable the old icons if flag is enabled.

Bug: 332662551
Flag: com.android.systemui.status_bar_screen_sharing_chips

Test: Screen record -> verify icon on right side doesn't appear
Test: Share screen to app -> verify icon on right side doesn't appear
Test: Cast screen to other device -> verify icon on right side doesn't
appear
Test: atest PhoneStatusBarPolicyTest

Change-Id: Icbafc8bb89f81fb6820306d8622f7991752b14dc