Python failed a+=b type check

[111116]

cu_kernel.cu(9103): error: no suitable conversion function from "lc_float3" to "lc_float" exists
    v1 = (v1 + v3);
         ^

1 error detected in the compilation of "cu_kernel.cu".

To Reproduce

import luisa

luisa.init()

@luisa.func
def f():
    a = float()
    b = luisa.float3()
    a += b

f(dispatch_size=1)

Expected behavior
Python front end detects compile error

[MaxwellGengYF]

Codegen fixed.