chore(bw): cleanup and consolidate B&W navigation code. #11899

Job	Run time
Run tests (x9dp2019)	2m 42s
Run tests (tx16s)	5m 4s
Run tests (nv14)	5m 19s
Run tests (el18)	4m 57s
Run tests (pl18)	5m 1s
Run tests (pl18ev)	5m 3s
Run tests (t12)	2m 42s
Run tests (t12max)	2m 43s
Run tests (t15)	5m 17s
Run tests (t16)	5m 17s
Run tests (t18)	5m 5s
Run tests (t8)	2m 40s
Run tests (tlite)	2m 40s
Run tests (t20)	2m 41s
Run tests (t14)	2m 44s
Run tests (t20v2)	2m 45s
Run tests (tx12)	2m 41s
Run tests (x10)	5m 6s
Run tests (x12s)	5m 19s
Run tests (x7)	2m 50s
Run tests (x9d)	2m 51s
Run tests (x9dp)	2m 37s
Run tests (x9e)	2m 42s
Run tests (x9lite)	2m 39s
Run tests (x9lites)	2m 38s
Run tests (xlite)	2m 52s
Run tests (xlites)	2m 38s
Run tests (mt12)	2m 44s
Run tests (gx12)	2m 49s
Run tests (nb4p)	4m 59s
Run builds (nv14;el18)	5m 27s
Run builds (pl18;pl18ev)	5m 25s
Run builds (t12;t12max)	2m 27s
Run builds (t15;t16;t18)	8m 7s
Run builds (t8;zorro;pocket;mt12;commando8)	5m 18s
Run builds (tlite;tpro;tprov2;tpros;bumblebee;lr3pro)	5m 58s
Run builds (t20;t20v2;t14)	3m 33s
Run builds (tx12;tx12mk2;boxer;gx12)	4m 31s
Run builds (tx16s)	3m 9s
Run builds (f16)	3m 13s
Run builds (v16)	3m 13s
Run builds (x10;x10express)	5m 23s
Run builds (x12s)	3m 14s
Run builds (x7;x7access)	2m 33s
Run builds (x9d;x9dp;x9dp2019)	3m 20s
Run builds (x9e;x9e-hall)	2m 44s
Run builds (x9lite;x9lites)	2m 34s
Run builds (xlite;xlites)	2m 32s
Run builds (mt12;gx12)	2m 38s
Run builds (nb4p)	3m 15s
Package firmwares	7s
	3h 6m 46s

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