Winscope: prefix layer id to surface flinger layer name

Also fixes exception on startup in App.vue

Test: open sf trace in winscope
Test: open winscope with debugger and check for exceptions

Change-Id: I2b0e1fad5f26258e7f2ca5c47f82ad11037a84d2
Merged-In: I2b0e1fad5f26258e7f2ca5c47f82ad11037a84d2
2 files changed