fix: strengthen lcd buffer protection #8956

Job	Run time
Run tests (x9dp2019)	2m 56s
Run tests (tx16s)	5m 3s
Run tests (nv14)	4m 57s
Run tests (el18)	5m 3s
Run tests (pl18)	5m 9s
Run tests (pl18ev)	5m 8s
Run tests (t12)	2m 38s
Run tests (t16)	5m 7s
Run tests (t18)	5m 10s
Run tests (t8)	2m 33s
Run tests (tlite)	2m 33s
Run tests (t20)	2m 52s
Run tests (tx12)	2m 36s
Run tests (x10)	5m 5s
Run tests (x12s)	5m 4s
Run tests (x7)	2m 36s
Run tests (x9d)	2m 37s
Run tests (x9dp)	2m 47s
Run tests (x9e)	2m 39s
Run tests (x9lite)	2m 38s
Run tests (x9lites)	2m 33s
Run tests (xlite)	2m 32s
Run tests (xlites)	2m 36s
Run builds (nv14;el18)	4m 45s
Run builds (pl18;pl18ev)	4m 42s
Run builds (t12)	1m 24s
Run builds (t16;t18)	4m 50s
Run builds (t8;zorro;pocket;mt12;commando8)	4m 12s
Run builds (tlite;tpro;tprov2;lr3pro)	3m 20s
Run builds (t20)	1m 24s
Run builds (tx12;tx12mk2;boxer)	2m 50s
Run builds (tx16s)	2m 51s
Run builds (x10;x10-access)	5m 2s
Run builds (x12s)	2m 51s
Run builds (x7;x7-access)	2m 23s
Run builds (x9d;x9dp;x9dp2019)	2m 45s
Run builds (x9e;x9e-hall)	2m 13s
Run builds (x9lite;x9lites)	2m 5s
Run builds (xlite;xlites)	2m 6s
	2h 12m 35s

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