Reorder AP_ESC_Telem fields #35205

Job	Run time
build (base)	6m 35s
build-gcc-heli	6m 38s
build (clang)	8m 56s
autotest-heli (sitltest-heli)	11m 28s
autotest (sitltest-copter-tests1a)	11m 27s
autotest (sitltest-copter-tests1b)	13m 57s
autotest (sitltest-copter-tests1c)	12m 18s
autotest (sitltest-copter-tests1d)	11m 54s
autotest (sitltest-copter-tests1e)	14m 10s
autotest (sitltest-copter-tests2a)	13m 28s
autotest (sitltest-copter-tests2b)	24m 3s
	2h 14m 54s

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