[Super errors] Add the last line of a file to the code frame

This is technically a small bug from way back. The recent refactor #5013 allowed us to fix this.

Author: chenglou

jscomp/build_tests/super_errors/expected/collections.re.expected

@@ -4,6 +4,7 @@
 
  1 │ /* wrong type in a list */
  2 │ [1, 2, "Hello"] -> ignore;
+ 3 │ 
 
  This has type: string
  Somewhere wanted: int

jscomp/build_tests/super_errors/expected/highlighting2.re.expected

@@ -6,6 +6,7 @@
  2 ┆ let a: int = "hel
  3 ┆ 
  4 ┆ lo";
+ 5 ┆ 
 
  This has type: string
  Somewhere wanted: int

jscomp/build_tests/super_errors/expected/highlighting3.re.expected

@@ -6,6 +6,7 @@
  2 │ let a: int = "helllllll
  3 │ 
  4 │ loooooooooooooo";
+ 5 │ 
 
  This has type: string
  Somewhere wanted: int

jscomp/build_tests/super_errors/expected/highlighting5.re.expected

@@ -5,6 +5,7 @@
  1 │ /* overflows in the terminal */
  2 │ let a: int = "hellllllllllllllllllllllllllllllllllllllllllllllllllllllll
  lllllllllllllllllllllllllll";
+ 3 │ 
 
  This has type: string
  Somewhere wanted: int

jscomp/build_tests/super_errors/expected/highlighting6.re.expected

@@ -4,6 +4,7 @@
 
  1 │ let aaaaa = 10;
  2 │ let b = aaaab;
+ 3 │ 
 
  The value aaaab can't be found
 

jscomp/build_tests/super_errors/expected/modules1.re.expected

@@ -3,6 +3,7 @@
  /.../fixtures/modules1.re:1:9-13
 
  1 │ let b = Foo.b;
+ 2 │ 
 
  The module or file Foo can't be found.
  - If it's a third-party dependency:

jscomp/build_tests/super_errors/expected/modules3.re.expected

@@ -6,6 +6,7 @@
  10 │ 
  11 │ let asd = A.B.C.D.aaa;
  12 │ 
+ 13 │ 
 
  The value aaa can't be found in A.B.C.D
 

jscomp/build_tests/super_errors/expected/moreArguments1.re.expected

@@ -4,5 +4,6 @@
 
  1 │ let x = (~a, ~b) => a + b;
  2 │ let y = x(~a=2) + 2;
+ 3 │ 
 
  This call is missing an argument of type (~b: int)

jscomp/build_tests/super_errors/expected/moreArguments2.re.expected

@@ -4,5 +4,6 @@
 
  1 │ let x = (a, b) => a + b;
  2 │ let y = x(2) + 2;
+ 3 │ 
 
  This call is missing an argument of type int

jscomp/build_tests/super_errors/expected/moreArguments3.re.expected

@@ -4,5 +4,6 @@
 
  1 │ let x = (a, b, c, d) => a + b;
  2 │ let y = x(2) + 2;
+ 3 │ 
 
  This call is missing arguments of type: int, 'a, 'b