natus wheel: fix DON/DOFF reset on PRV/NXT return to DONned planet — TDD

_aspectsVisible was set to false when stepping away to a different planet,
but the guard `if (item0.name !== _aspectPlanet)` only skipped resetting it
on return — it never restored it to true. Replace the conditional with a
direct assignment: _aspectsVisible = (item0.name === _aspectPlanet).

T11g: navigating away via NXT then back via PRV restores DOFF-active state.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/static_src/tests/NatusWheelSpec.js

@@ -429,6 +429,26 @@ describe("NatusWheel — DON/DOFF aspect line persistence", () => {
         expect(donDisabled()).toBe(false);
         expect(aspectLines()).toBe(0);
     });
+
+    // T11g — PRV/NXT navigation back to a DONned planet must restore DOFF state
+    it("T11g: navigating away via NXT then back via PRV restores DOFF-active state", () => {
+        clickPlanet("Sun");
+        clickDon();
+        expect(donDisabled()).toBe(true);  // DON disabled, aspects active
+
+        // Navigate away to next planet
+        tooltipEl.querySelector(".nw-tt-nxt")
+            .dispatchEvent(new MouseEvent("click", { bubbles: true }));
+        expect(donDisabled()).toBe(false);  // new planet — DON fresh/active
+
+        // Navigate back to Sun
+        tooltipEl.querySelector(".nw-tt-prv")
+            .dispatchEvent(new MouseEvent("click", { bubbles: true }));
+
+        // Sun's aspects are still drawn — DOFF must be active, DON must be disabled
+        expect(donDisabled()).toBe(true);
+        expect(aspectLines()).toBeGreaterThan(0);
+    });
 });
 
 xdescribe("NatusWheel — half-wheel tooltip positioning", () => {