assigning indexed NimNode to tuple/object field copies

Example

import macros

macro notBug(n: untyped): untyped =
  let node = n[0] # skip the nnkStmtList
  node[1] = newLit(2) # replace 0 with 2
  result = n

macro bug(n: untyped): untyped =
  let (node, ) = (n[0], )
  node[1] = newLit(2)
  # Another version using object:
  # type Holder = object
  #   val: NimNode
  # let node = Holder(val: n[0])
  # node.val[1] = newLit(2)
  result = n

var x = notBug: 0 * 2
var y = bug: 0 * 2
echo x
echo y

Current Output

4
0

Expected Output

4
4

Additional Information

Doesn't seem to be a regression.

[timotheecour]

attempted fix (PR staled and got closed): #13767
(note: github does not reference PR's if only specified in title; PR's because of this github bug, PR's should always reference issues in body even if also referenced in title)

issue still relevant as of 16003bf 1.3.5

[metagn]

Works in devel and 2.0?

[metagn]

Tuple version works since it's a tuple unpacking after #21563, doing let node = (n[0], )[0] doesn't work, neither does object version