debugger: Use UUID for Go debug binary names, do not rely on OUT_DIR (#32004)

It seems that there was a regression. `build_config` no longer has an
`OUT_DIR` in it.
On way to mitigate it is to stop relying on it and just use `cwd` as dir
for the test binary to be placed in.

Release Notes:
- N/A

---------

Co-authored-by: Piotr Osiewicz <24362066+osiewicz@users.noreply.github.com>

Cargo.lock

@@ -12113,6 +12113,7 @@ dependencies = [
  "unindent",
  "url",
  "util",
+ "uuid",
  "which 6.0.3",
  "workspace-hack",
  "worktree",