swarm ui: the PR report's approvals column filters on whether the rule is met

The report had an approvals column (1/2) and a separate approved column.
They are one fact, so approvals now carries the filter, complete or missing,
and the approved column is gone.

frontend/packages/swarm-ui/test/pr-report.test.mjs

@@ -2,6 +2,7 @@
 import assert from "node:assert/strict";
 import { test } from "node:test";
 import {
+  approvalsState,
   approvalsText,
   diffSize,
   diffText,
@@ -78,3 +79,18 @@ test("a PR has all approvals when it meets the rule, and an unprotected base alw
     true,
   );
 });
+
+test("the approvals column filters on whether the rule is met", () => {
+  assert.equal(approvalsState(row({})), "missing");
+  assert.equal(approvalsState(row({ approvals: 2 })), "complete");
+  assert.equal(
+    approvalsState(
+      row({
+        targets_protected_branch: false,
+        required_approvals: 0,
+        approvals: 0,
+      }),
+    ),
+    "complete",
+  );
+});