test_runner: refactor namings

Author: pmarchini

lib/internal/test_runner/test.js

@@ -1069,11 +1069,11 @@ class Test extends AsyncResource {
       }
 
       if (this.plan !== null) {
-        const checkPollPromise = this.plan?.check();
-        // If the plan returns a promise, then the plan is polling and we need to wait for it to finish
-        // or the test to stop
-        if (checkPollPromise) {
-          await SafePromiseRace([checkPollPromise, stopPromise]);
+        const planPromise = this.plan?.check();
+        // If the plan returns a promise, it means that it is waiting for more assertions to be made before
+        // continuing.
+        if (planPromise) {
+          await SafePromiseRace([planPromise, stopPromise]);
         }
       }