fixes #24319; move doesn't work well with (deref (var array)) (#24321)

fixes #24319

`byRefLoc` (`mapType`) requires the Loc `a` to have the right type.
Without `lfEnforceDeref`, it produces the wrong type for `deref (var
array)`, which may come from `mitems`.

compiler/ccgexprs.nim

@@ -2321,7 +2321,7 @@ proc genWasMoved(p: BProc; n: PNode) =
     #  [addrLoc(p.config, a), getTypeDesc(p.module, a.t)])
 
 proc genMove(p: BProc; n: PNode; d: var TLoc) =
-  var a: TLoc = initLocExpr(p, n[1].skipAddr)
+  var a: TLoc = initLocExpr(p, n[1].skipAddr, {lfEnforceDeref})
   if n.len == 4:
     # generated by liftdestructors:
     var src: TLoc = initLocExpr(p, n[2])

tests/destructor/tmove.nim

@@ -16,3 +16,16 @@ block:
     doAssert s == 2
 
   foo()
+
+import std/deques
+
+block: # bug #24319
+  var queue = initDeque[array[32, byte]]()
+  for i in 0 ..< 5:
+    let element: array[32, byte] = [
+            0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+            0, 0, 0, 0, 0, 1,
+          ]
+    queue.addLast(element)
+
+  doAssert queue.popLast[^1] == byte(1)