setHasFlags() correctly handles PB repeated fields #1515

Job	Run time
call-node-workflow / build	37s
build (Pico)	2m 52s
build (PicoW)	3m 18s
build (AlpacaOwO)	3m 8s
build (BentoBox)	2m 42s
build (DURAL)	2m 52s
build (FightboardV3)	2m 55s
build (FightboardV3Mirrored)	2m 41s
build (FlatboxRev4)	3m 24s
build (FlatboxRev5)	2m 55s
build (FlatboxRev5RGB)	3m 44s
build (FlatboxRev5Southpaw)	3m 30s
build (KB2040)	2m 43s
build (KeyboardConverter)	2m 47s
build (Liatris)	2m 43s
build (MavercadeKeebfighter)	3m 35s
build (PicoAnn)	2m 56s
build (PicoFightingBoard)	2m 44s
build (ReflexCtrlSNES)	3m 16s
build (ReflexEncoder)	3m 37s
build (RP2040AdvancedBreakoutBoard)	2m 39s
build (RP2040MiniBreakoutBoard)	3m 0s
build (SparkFunProMicro)	2m 57s
build (WaveshareZero)	2m 47s
build (Stress)	2m 43s
build (SGFDevices)	2m 50s
	1h 15m 55s

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