Step into `eval` when `pauseForSourceMap` is true does not pause on next available line

[c3danielxu]

Describe the bug
When I into an eval function with pauseForSourceMap as true, the code execution does not pause on the next available line. This is a follow up of #1556 except step over works, but step into does not.

To Reproduce
Steps to reproduce the behavior:

1. Use default launch configurations and add "pauseForSourceMap": true
2. Debug and see that step into does not pause on line 9 in the screen recording

Log File
vscode-debugadapter-c0c5bc5a.json.gz

VS Code Version: 1.77.3 and JavaScript nightly debugger as of April 18, 2023

Additional context

f = eval(
`(function (a, b) {
  c = a + b;
  return c;
});
//# sourceURL=foo.js
//# sourceMappingURL=foo.js.map
`);
f(1, 2);
console.log('success');

step.into.eval.mp4