[Invisalign] include local headers by file name

The compiler will take the directory of the source
as one of the header search directory, thus including
local headers by relative file name (without path)
makes the code more portable.

Bug: 291284694
Test: mma packages/modules/Bluetooth
Change-Id: I85c0b4f8bb573b2db5745fd6d27216c6c51a4b44