`JSON3.read` parses literal successfully regardless of trailing text

[xlxs4]

julia> JSON3.read("""true::[[[}}{sdfg""")
true

julia> JSON3.read("""1::[[[}}{sdfg""")
1

julia> JSON3.read(""""hi"::[[[}}{sdfg""")
"hi"

JSON errors instead, which I feel is more sensible:

julia> JSON.parse("""true::[[[}}{sdfg""")
ERROR: Expected end of input
Line: 0
Around: ...true::[[[}}{sdfg...
               ^

julia> JSON.parse("""1::[[[}}{sdfg""")
ERROR: Expected end of input
Line: 0
Around: ...1::[[[}}{sdfg...
            ^

julia> JSON.parse(""""hi"::[[[}}{sdfg""")
ERROR: Expected end of input
Line: 0
Around: ..."hi"::[[[}}{sdfg...

After read! there's a call to getvalue:

JSON3.jl/src/read.jl

Line 69 in b23ad48

return getvalue(Any, buf, tape, 1, t)

[kengruven]

Same issue as #247?