fix(pacquet/config): satisfy dylint perfectionist lints (#11672)

Two pre-existing perfectionist findings landed via #11526 and broke
the Dylint CI job on main:

- `perfectionist::macro-trailing-comma` flagged a trailing comma in a
  single-line `assert_eq!(...)` that `cargo fmt` had collapsed from a
  multi-line form without dropping the comma. Removed the comma.
- `perfectionist::unicode_ellipsis_in_comments` warned about a U+2026
  `…` character in a test comment. CI runs with `RUSTFLAGS=-D warnings`,
  so the warning fails the build. Replaced with ASCII `...`.

Verified locally with `cargo dylint --all -- --all-targets --workspace`
under `RUSTFLAGS=-D warnings`; passes clean.

---
Written by an agent (Claude Code, claude-opus-4-7).

pacquet/crates/config/src/env_replace.rs

@@ -319,6 +319,6 @@ mod tests {
     fn collects_every_unresolved_placeholder_occurrence() {
         let (value, unresolved) = env_replace_lossy::<NoEnv>("${A}-${B}-${A}");
         assert_eq!(value, "--");
-        assert_eq!(unresolved, vec!["${A}".to_owned(), "${B}".to_owned(), "${A}".to_owned()],);
+        assert_eq!(unresolved, vec!["${A}".to_owned(), "${B}".to_owned(), "${A}".to_owned()]);
     }
 }

pacquet/crates/config/src/npmrc_auth/tests.rs

@@ -143,7 +143,7 @@ fn env_replace_substitutes_token() {
 #[test]
 fn env_replace_failure_warns_and_drops_unresolved_to_empty() {
     // Mirrors pnpm's `substituteEnv` lossy fallback: unresolved `${VAR}` becomes
-    // "" so a downstream `Authorization: Bearer …` header is never sent with a
+    // "" so a downstream `Authorization: Bearer ...` header is never sent with a
     // literal placeholder. See https://github.com/pnpm/pnpm/issues/11513.
     let ini = "//reg.com/:_authToken=${MISSING}\n";
     let auth = NpmrcAuth::from_ini::<NoEnv>(ini);