Add shell:fifo_file permission for cameraserver

Bug: 73952536
Test: run cts -m CtsCameraTestCases -t android.hardware.camera2.cts.IdleUidTest#testCameraAccessBecomingInactiveUid
Change-Id: I508352671367dfa106e80108c3a5c0255b5273b2

public/cameraserver.te

@@ -55,6 +55,7 @@ allow cameraserver adbd:fd use;
 allow cameraserver adbd:unix_stream_socket { read write };
 allow cameraserver shell:fd use;
 allow cameraserver shell:unix_stream_socket { read write };
+allow cameraserver shell:fifo_file { read write };
 
 # Allow shell commands from ADB for CTS testing/dumping
 userdebug_or_eng(`