ffi: validate 'void' as parameter type in getFunction and getFunctions #7210

Job	Run time
Build slim tarball	1m 9s
aarch64-linux: Cache V8 build	23s
x86_64-linux: with shared libraries	29m 35s
x86_64-darwin: with shared libraries	36m 29s
aarch64-darwin: with shared libraries	24m 27s
aarch64-linux: with shared openssl-4.0.0	25m 4s
aarch64-linux: with shared openssl-3.5.5	24m 47s
aarch64-linux: with shared openssl-3.6.1	24m 54s
aarch64-linux: with shared boringssl-0.20260413.0	24m 12s
aarch64-linux: with shared openssl-3.0.19	25m 44s
aarch64-linux: with shared openssl-1.1.1w	24m 23s
	4h 1m 7s

Provide feedback