swarm ui: sort every pull requests column, and read a protection rule as the forge does

The labels and reviewers columns had no sort, so "every column sorts" was
false; both now sort on their joined text.

A branch protection rule's name is a glob the forge compiles with `/` as its
separator, which also takes `?`, `[a-z]`, `[!a-z]`, `{a,b}` and a backslash
escape. The report read only `*` and `**`, so a rule such as `{main,release}`
matched nothing and its PRs showed as protected by no rule, needing no
approvals. It now reads all of them.

frontend/packages/swarm-ui/src/pages/PrReportPage.tsx

@@ -81,6 +81,7 @@ const COLUMNS: TableColumn<PrReportRow>[] = [
     key: "labels",
     header: "labels",
     render: (r) => (r.labels.length ? r.labels.join(", ") : "—"),
+    sortBy: (r) => r.labels.join(", "),
     filterValues: (r) => r.labels,
     filterMode: "multiselect",
   },
@@ -89,6 +90,7 @@ const COLUMNS: TableColumn<PrReportRow>[] = [
     header: "reviewers",
     render: (r) =>
       r.requested_reviewers.length ? r.requested_reviewers.join(", ") : "—",
+    sortBy: (r) => r.requested_reviewers.join(", "),
     filterValues: (r) => r.requested_reviewers,
     filterMode: "multiselect",
   },