chore: Test for printing array of strings (#4389)

# Description

## Problem\*

Resolves #2903 

## Summary\*

I added a function `regression_2903` to the `debug_logs` test that shows
we can now accurately print arrays of strings. This was fixed in
previous formatting work. I also removed `std::` prefixes from `println`
now that we have a prelude.

## Additional Context


## Documentation\*

Check one:
- [X] No documentation needed.
- [ ] Documentation included in this PR.
- [ ] **[Exceptional Case]** Documentation to be submitted in a separate
PR.

# PR Checklist\*

- [X] I have tested the changes locally.
- [X] I have formatted the changes with [Prettier](https://prettier.io/)
and/or `cargo fmt` on default settings.

test_programs/execution_success/debug_logs/src/main.nr

@@ -1,77 +1,76 @@
-use dep::std;
-
-fn main(x: Field, y: pub Field) {
+fn main(x: Field, y: pub Field) {    
     let string = "i: {i}, j: {j}";
-    std::println(string);
+    println(string);
 
     // TODO: fmtstr cannot be printed
     // let fmt_str: fmtstr<14, (Field, Field)> = f"i: {x}, j: {y}";
     // let fmt_fmt_str = f"fmtstr: {fmt_str}, i: {x}";
-    // std::println(fmt_fmt_str);
+    // println(fmt_fmt_str);
 
     // A `fmtstr` lets you easily perform string interpolation.
     let fmt_str: fmtstr<14, (Field, Field)> = f"i: {x}, j: {y}";
 
     let fmt_str = string_identity(fmt_str);
-    std::println(fmt_str);
+    println(fmt_str);
 
     let fmt_str_no_type = f"i: {x}, j: {y}";
-    std::println(fmt_str_no_type);
+    println(fmt_str_no_type);
 
     let fmt_str_generic = string_with_generics(fmt_str_no_type);
-    std::println(fmt_str_generic);
+    println(fmt_str_generic);
 
     let s = myStruct { y: x, x: y };
-    std::println(s);
+    println(s);
 
-    std::println(f"randomstring{x}{x}");
+    println(f"randomstring{x}{x}");
 
     let fmt_str = string_with_partial_generics(f"i: {x}, s: {s}");
-    std::println(fmt_str);
+    println(fmt_str);
 
-    std::println(x);
-    std::println([x, y]);
+    println(x);
+    println([x, y]);
 
     let foo = fooStruct { my_struct: s, foo: 15 };
-    std::println(f"s: {s}, foo: {foo}");
+    println(f"s: {s}, foo: {foo}");
 
-    std::println(f"x: 0, y: 1");
+    println(f"x: 0, y: 1");
 
     let s_2 = myStruct { x: 20, y: 30 };
-    std::println(f"s1: {s}, s2: {s_2}");
+    println(f"s1: {s}, s2: {s_2}");
 
     let bar = fooStruct { my_struct: s_2, foo: 20 };
-    std::println(f"foo1: {foo}, foo2: {bar}");
+    println(f"foo1: {foo}, foo2: {bar}");
 
     let struct_string = if x != 5 { f"{foo}" } else { f"{bar}" };
-    std::println(struct_string);
+    println(struct_string);
 
     let one_tuple = (1, 2, 3);
     let another_tuple = (4, 5, 6);
-    std::println(f"one_tuple: {one_tuple}, another_tuple: {another_tuple}");
-    std::println(one_tuple);
+    println(f"one_tuple: {one_tuple}, another_tuple: {another_tuple}");
+    println(one_tuple);
 
     let tuples_nested = (one_tuple, another_tuple);
-    std::println(f"tuples_nested: {tuples_nested}");
-    std::println(tuples_nested);
+    println(f"tuples_nested: {tuples_nested}");
+    println(tuples_nested);
 
+    regression_2903();
     regression_2906();
 
     let first_array = [1, 2, 3];
     let second_array = [4, 5, 6];
     let arrays_nested = [first_array, second_array];
-    std::println(f"first_array: {first_array}, second_array: {second_array}");
-    std::println(f"arrays_nested: {arrays_nested}");
+    println(f"first_array: {first_array}, second_array: {second_array}");
+    println(f"arrays_nested: {arrays_nested}");
 
     let free_lambda = |x| x + 1;
     let sentinel: u32 = 8888;
-    std::println(f"free_lambda: {free_lambda}, sentinel: {sentinel}");
-    std::println(free_lambda);
+    println(f"free_lambda: {free_lambda}, sentinel: {sentinel}");
+    println(free_lambda);
 
     let one = 1;
     let closured_lambda = |x| x + one;
-    std::println(f"closured_lambda: {closured_lambda}, sentinel: {sentinel}");
-    std::println(closured_lambda);
+    println(f"closured_lambda: {closured_lambda}, sentinel: {sentinel}");
+    println(closured_lambda);
 }
 
 fn string_identity(string: fmtstr<14, (Field, Field)>) -> fmtstr<14, (Field, Field)> {
@@ -96,19 +95,30 @@ struct fooStruct {
     foo: Field,
 }
 
+fn regression_2903() {
+    let v : [str<1>; 1] = ["1"; 1];
+    println(v); // will print [1]
+
+    let a = v[0];
+    println(a); // will print `1`
+
+    let bytes = [ "aaa", "bbb", "ccc" ];
+    println(bytes);    
+}
+
 fn regression_2906() {
     let array_two_vals = [1, 2];
-    dep::std::println(f"array_two_vals: {array_two_vals}");
+    println(f"array_two_vals: {array_two_vals}");
 
     let label_two_vals = "12";
-    dep::std::println(f"label_two_vals: {label_two_vals}");
+    println(f"label_two_vals: {label_two_vals}");
 
     let array_five_vals = [1, 2, 3, 4, 5];
-    dep::std::println(f"array_five_vals: {array_five_vals}");
+    println(f"array_five_vals: {array_five_vals}");
 
     let label_five_vals = "12345";
-    dep::std::println(f"label_five_vals: {label_five_vals}");
+    println(f"label_five_vals: {label_five_vals}");
 
-    dep::std::println(f"array_five_vals: {array_five_vals}, label_five_vals: {label_five_vals}");
+    println(f"array_five_vals: {array_five_vals}, label_five_vals: {label_five_vals}");
 }