checker: message when method not exists

[enghitalo]

Describe the bug

Wrong message

Reproduction Steps

struct Builder[T] {
mut:
	buf T
}

pub fn new_builder[F](mut fixed_array F) !Builder[F] {
	$if F is $array_fixed {
		return Builder[F]{fixed_array}
	} $else {
		return error('fixed_buf need be a fixed array')
	}
}

fn main() {
	mut fixed := [3]u8{}
	mut sb := new_builder(mut fixed) or {
		eprintln(err)
		return
	}
	// println(sb)
	sb.write_string("")
}

Expected Behavior

e.v:21:5: error: unknown method or field: `Builder[[3]u8].write_string`
   19 |     }
   20 |     // println(sb)
   21 |     sb.write_string("")
      |        ~~~~~~~~~~~~~~~~
   22 | }
   23 |

or

e.v:21:5: error: unknown method or field: `Builder[F].write_string`
   19 |     }
   20 |     // println(sb)
   21 |     sb.write_string("")
      |        ~~~~~~~~~~~~~~~~
   22 | }
   23 |

Current Behavior

e.v:21:5: error: unknown method or field: `Builder<F>[[3]u8].write_string`
   19 |     }
   20 |     // println(sb)
   21 |     sb.write_string("")
      |        ~~~~~~~~~~~~~~~~
   22 | }
   23 |

Possible Solution

No response

Additional Information/Context

No response

V version

V 0.4.3 bf7b29a

Environment details (OS name and version, etc.)

Ubuntu

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