Initialize correct antlr nodes for enclosed transitions during disambiguation

[KvanTTT]

Given the following grammar:

DOUBLE_STAR: 'A'* 'A'* 'A';

Enclosed-transition A should not contain ANTLR node of the third token:

Expected ATN

digraph ATN {
  rankdir=LR;

  "DEFAULT_MODE(s0)" -> s12 [label="A {3:15(1), 3:20(1), 3:25(1)}"]
  s12 -> s12 [label="A {3:15(1), 3:20(1)}" taillabel=0]
  s12 -> s11 [label="end(DOUBLE_STAR)" taillabel=1 style=dotted]
}

Actual ATN

digraph ATN {
  rankdir=LR;

  "DEFAULT_MODE(s0)" -> s12 [label="A {3:15(1), 3:20(1), 3:25(1)}"]
  s12 -> s12 [label="A {3:15(1), 3:20(1), 3:25(1)}" taillabel=0]
  s12 -> s11 [label="end(DOUBLE_STAR)" taillabel=1 style=dotted]
}