Add relposheading in process fix uavcan driver (AP Periph Dronecan Dual RTK support) #26469

Job	Run time
build (check_format)	1m 1s
build (check_newlines)	1m 29s
build (tests)	5m 42s
build (tests_coverage)	7m 34s
build (px4_fmu-v2_default stack_check)	3m 7s
build (validate_module_configs)	53s
build (shellcheck_all)	1m 37s
build (NO_NINJA_BUILD=1 px4_fmu-v5_default)	4m 3s
build (NO_NINJA_BUILD=1 px4_sitl_default)	3m 21s
build (px4_sitl_allyes)	4m 16s
build (airframe_metadata)	57s
build (module_documentation)	1m 2s
build (parameters_metadata)	1m 1s
	36m 3s

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