chore(swingset): change several tests to use c.run instead of c.step

Many operations that previously finished in a single crank will start to need
additional cranks soon, when we begin processing GC actions before servicing
the run-queue. This patch anticipates these new GC actions by changing
several tests to use `c.run()` (which drains both queues) instead of
`c.step()` which does just a single crank).

packages/SwingSet/test/test-controller.js

@@ -314,7 +314,10 @@ test('bootstrap export', async t => {
     'right.obj0.bar 2 true',
   ]);
 
+  // that pushes several higher-priority GC dropExports onto the queue as
+  // everything gets dropped
+  await c.run();
+
   removeTriple(kt, barP, leftVatID, 'p+5'); // pruned promise
   checkKT(t, c, kt);
-  t.deepEqual(c.dump().runQueue, []);
 });

packages/SwingSet/test/test-devices.js

@@ -162,7 +162,7 @@ async function test2(t, mode) {
       'method4',
       'ret method4 done',
     ]);
-    await c.step();
+    await c.run();
     t.deepEqual(c.dump().log, [
       'calling d2.method4',
       'method4',

packages/SwingSet/test/timer-device/test-device.js

@@ -33,9 +33,9 @@ test('wake', async t => {
   await initializeSwingset(timerConfig, ['timer'], hostStorage);
   const c = await makeSwingsetController(hostStorage, deviceEndowments);
   timer.poll(1);
-  await c.step();
+  await c.run();
   timer.poll(5);
-  await c.step();
+  await c.run();
   t.deepEqual(c.dump().log, ['starting wake test', 'handler.wake()']);
 });
 
@@ -49,9 +49,9 @@ test('repeater', async t => {
   await initializeSwingset(timerConfig, ['repeater', 3, 2], hostStorage);
   const c = await makeSwingsetController(hostStorage, deviceEndowments);
   timer.poll(1);
-  await c.step();
+  await c.run();
   timer.poll(5);
-  await c.step();
+  await c.run();
   t.deepEqual(c.dump().log, [
     'starting repeater test',
     'next scheduled time: 3',
@@ -69,11 +69,11 @@ test('repeater2', async t => {
   await initializeSwingset(timerConfig, ['repeater', 3, 2], hostStorage);
   const c = await makeSwingsetController(hostStorage, deviceEndowments);
   timer.poll(1n);
-  await c.step();
+  await c.run();
   timer.poll(5n);
-  await c.step();
+  await c.run();
   timer.poll(8n);
-  await c.step();
+  await c.run();
   t.deepEqual(c.dump().log, [
     'starting repeater test',
     'next scheduled time: 3',
@@ -92,25 +92,25 @@ test('repeaterZero', async t => {
   await initializeSwingset(timerConfig, ['repeater', 0, 3], hostStorage);
   const c = await makeSwingsetController(hostStorage, deviceEndowments);
   timer.poll(1);
-  await c.step();
+  await c.run();
   timer.poll(2);
-  await c.step();
+  await c.run();
   timer.poll(3);
-  await c.step();
+  await c.run();
   timer.poll(4);
-  await c.step();
+  await c.run();
   timer.poll(5);
-  await c.step();
+  await c.run();
   timer.poll(6);
-  await c.step();
+  await c.run();
   timer.poll(7);
-  await c.step();
+  await c.run();
   timer.poll(8);
-  await c.step();
+  await c.run();
   timer.poll(9);
-  await c.step();
+  await c.run();
   timer.poll(10);
-  await c.step();
+  await c.run();
   t.deepEqual(c.dump().log, [
     'starting repeater test',
     'next scheduled time: 3',