fix(solver-problems): preserve first-occurrence order in extension hint

create_extension_hint's --ignore-platform-req suggestion list sorted
missing extensions alphabetically before deduping. PHP's array_unique
removes duplicates while preserving first-occurrence order instead,
which for this call site matches the order problems were reported in
(root-require-not-found problems before SAT-conflict problems).
Replaced the sort+dedup with the existing order-preserving
shirabe_php_shim::array_unique, which was already ported for exactly
this PHP semantic but wasn't used here.

1 files changed, 1 insertions, 3 deletions

diff --git a/crates/shirabe/src/dependency_resolver/solver_problems_exception.rs b/crates/shirabe/src/dependency_resolver/solver_problems_exception.rs
index 48fe76b3..39f2b2c1 100644
--- a/crates/shirabe/src/dependency_resolver/solver_problems_exception.rs
+++ b/crates/shirabe/src/dependency_resolver/solver_problems_exception.rs
@@ -134,9 +134,7 @@ impl SolverProblemsException {
             paths.remove(0);
         }
 
-        let mut unique_extensions: Vec<String> = missing_extensions.to_vec();
-        unique_extensions.sort();
-        unique_extensions.dedup();
+        let unique_extensions = shirabe_php_shim::array_unique(missing_extensions);
         let ignore_extensions_arguments: String = unique_extensions
             .iter()
             .map(|ext| format!("--ignore-platform-req={}", ext))