Libui Enable Bound Sanitizers

Turned on sanitizer flags for bound checking for libui.

Bug: b/143535333
Test: Ran the following tests
native:
  Region_test
  colorspace_test
  GraphicBuffer_test
  BufferHub_test
  Size_test
  hwui_macro
Cts test cases:
  CtsUiAutomationTestCases
  CtsUiRenderingTestCases
  CtsUiRenderingTestCases27
  CtsUidIsolationTestCases
  CtsUsageStatsTestCases

Change-Id: Ice642ebff329823742211d491c788a123344b69b