chore(bw): cleanup and consolidate B&W navigation code. #11953

Job	Run time
Run tests (x9dp2019)	2m 43s
Run tests (tx16s)	5m 5s
Run tests (nv14)	5m 17s
Run tests (el18)	4m 59s
Run tests (pl18)	4m 56s
Run tests (pl18ev)	5m 1s
Run tests (t12)	2m 38s
Run tests (t12max)	2m 53s
Run tests (t15)	5m 7s
Run tests (t16)	5m 5s
Run tests (t18)	5m 4s
Run tests (t8)	2m 40s
Run tests (tlite)	2m 40s
Run tests (t20)	2m 41s
Run tests (t14)	2m 56s
Run tests (t20v2)	2m 58s
Run tests (tx12)	2m 42s
Run tests (x10)	5m 16s
Run tests (x12s)	5m 7s
Run tests (x7)	2m 36s
Run tests (x9d)	2m 41s
Run tests (x9dp)	2m 39s
Run tests (x9e)	2m 34s
Run tests (x9lite)	2m 38s
Run tests (x9lites)	2m 36s
Run tests (xlite)	2m 36s
Run tests (xlites)	2m 38s
Run tests (mt12)	2m 43s
Run tests (gx12)	2m 48s
Run tests (nb4p)	5m 0s
Run builds (nv14;el18)	5m 39s
Run builds (pl18;pl18ev)	5m 31s
Run builds (t12;t12max)	2m 41s
Run builds (t15;t16;t18)	7m 53s
Run builds (t8;zorro;pocket;mt12;commando8)	5m 7s
Run builds (tlite;tpro;tprov2;tpros;bumblebee;lr3pro)	6m 8s
Run builds (t20;t20v2;t14)	3m 31s
Run builds (tx12;tx12mk2;boxer;gx12)	4m 37s
Run builds (tx16s)	3m 6s
Run builds (f16)	3m 7s
Run builds (v16)	3m 7s
Run builds (x10;x10express)	5m 33s
Run builds (x12s)	3m 25s
Run builds (x7;x7access)	2m 35s
Run builds (x9d;x9dp;x9dp2019)	3m 21s
Run builds (x9e;x9e-hall)	2m 33s
Run builds (x9lite;x9lites)	2m 45s
Run builds (xlite;xlites)	2m 34s
Run builds (mt12;gx12)	2m 39s
Run builds (nb4p)	3m 21s
Package firmwares	7s
	3h 6m 37s

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