Repro case with a master build: https://codesandbox.io/s/stoic-mcnulty-dhygf?file=/src/App.js:668-703

Expected: we see content after a second.
Actual: fallback never resolves.

This happens in a sequence of:

1. Normal update
   - which suspends
2. Idle update
   - which also suspends
3. An unrelated normal update immediately followed by a ping (so they're batched)
   - here, we decide to stay on fallback, but should've shown the content

If you remove `_setVersion(v => v + 1);` on line 44 then the issue goes away.
}
                primaryChild = primaryChild.sibling;
              }
              pushSuspenseContext(
                workInProgress,
                setDefaultShallowSuspenseContext(suspenseStackCursor.current),
              );
               The primary children do not have pending work with sufficient
               priority. Bailout.
              const child = bailoutOnAlreadyFinishedWork(
                current,
                workInProgress,
                renderExpirationTime,
              );
              if (child !== null) {
                 
                 
                return child.sibling;
              } else {
                return null;
              }
            }
          } else {
            pushSuspenseContext(
              workInProgress,
              setDefaultShallowSuspenseContext(suspenseStackCursor.current),
            );
          }
          break;
        }