fix(radio): Lua insertMix function not working #7854

Job	Run time
Run tests (x9dp2019)	3m 53s
Run tests (tx16s)	7m 4s
Run tests (nv14)	9m 3s
Run tests (el18)	6m 50s
Run tests (t12)	3m 23s
Run tests (t16)	6m 47s
Run tests (t18)	9m 1s
Run tests (t8)	3m 12s
Run tests (tlite)	3m 17s
Run tests (t20)	3m 11s
Run tests (tx12)	3m 8s
Run tests (x10)	6m 53s
Run tests (x12s)	6m 56s
Run tests (x7)	3m 56s
Run tests (x9d)	3m 9s
Run tests (x9dp)	3m 10s
Run tests (x9e)	3m 44s
Run tests (x9lite)	3m 13s
Run tests (x9lites)	3m 16s
Run tests (xlite)	3m 16s
Run tests (xlites)	3m 12s
Run builds (nv14;el18)	7m 33s
Run builds (t12)	2m 12s
Run builds (t16)	5m 9s
Run builds (t18)	6m 9s
Run builds (t8;zorro;pocket;commando8)	5m 12s
Run builds (tlite;tpro;tprov2;lr3pro)	5m 17s
Run builds (t20)	2m 9s
Run builds (tx12;tx12mk2;boxer)	4m 8s
Run builds (tx16s)	4m 34s
Run builds (x10;x10-access)	7m 40s
Run builds (x12s)	5m 57s
Run builds (x7;x7-access)	3m 3s
Run builds (x9d;x9dp;x9dp2019)	4m 58s
Run builds (x9e;x9e-hall)	3m 7s
Run builds (x9lite;x9lites)	2m 59s
Run builds (xlite;xlites)	3m 4s
	2h 52m 45s

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