fix(resolver): expand root branch-alias and self.version replace links

Two related parity gaps surfaced by the `circular-dependency` fixture:

1. The root's `extra.branch-alias` entry was never materialized in the
   pool, and root-level `replace`/`provide`/`conflict` constraints
   written as `self.version` were forwarded verbatim. Mirror Composer's
   `RootAliasPackage`: resolve `self.version` against the root's
   declared version for the base entry, then add an extra alias entry
   (carrying the base links plus a duplicate link per `self.version`
   original retagged at the alias's version) when the root's version
   matches an `extra.branch-alias` key.

2. `Pool::matches_package` returned on the first link to a target name
   even when its constraint did not match the query, hiding any later
   link to the same target. With the alias above, that masked the
   second `replace` link tagged at the alias version. Keep iterating
   when target matches but constraint does not, so a later link can
   still satisfy.

1 files changed, 1 insertions, 1 deletions

diff --git a/crates/mozart/tests/installer.rs b/crates/mozart/tests/installer.rs
index e0dcb42..6e1862c 100644
--- a/crates/mozart/tests/installer.rs
+++ b/crates/mozart/tests/installer.rs
@@ -227,7 +227,7 @@ installer_fixture!(aliased_priority);
 installer_fixture!(aliased_priority_conflicting);
 installer_fixture!(aliases_with_require_dev, ignore);
 installer_fixture!(broken_deps_do_not_replace);
-installer_fixture!(circular_dependency, ignore);
+installer_fixture!(circular_dependency);
 installer_fixture!(circular_dependency2);
 installer_fixture!(circular_dependency_errors);
 installer_fixture!(conflict_against_provided_by_dep_package_works);