Update bug number for enable_magnification_follows_mouse flag.

The bug should be the "fullscreen magnification" bug, not the "window magnification" bug.

Bug:b/354696546
Test:None, aconfig flag change only
Flag: com.android.server.accessibility.enable_magnification_follows_mouse
Change-Id: I1eb67ea614cd4376f132c361d91f8692d6ef8994
1 file changed