Optimize the display of task process bar

[zhongchun]

What do these changes do?

1. Optimize the display of task process bar With the optimization of task process bar, it will print as follows when running the codes:

import mars
import mars.tensor as mt
import mars.dataframe as md


mars.new_session()
df = md.DataFrame(
    mt.random.randint(1, 100, size=(1000, 10), chunk_size=(130, 5)),
    columns=list("ABCDEFGHIJ"),
)
df.describe().execute()

  6%|████▎                                                                    |   5.92/100 [00:02<00:15,  5.91it/s]
 21%|███████████████▍                                                         |  21.07/100 [00:03<00:06, 11.34it/s]
 33%|███████████████████████▉                                                 |  32.76/100 [00:04<00:05, 11.49it/s]
 58%|██████████████████████████████████████████                               |  57.58/100 [00:06<00:03, 11.88it/s]
 70%|███████████████████████████████████████████████████▎                     |  70.27/100 [00:07<00:02, 12.15it/s]
 84%|█████████████████████████████████████████████████████████████▌           |  84.27/100 [00:08<00:01, 12.75it/s]
100%|█████████████████████████████████████████████████████████████████████████| 100.00/100 [00:08<00:00, 11.47it/s]

2. Remove unnecessary metric initialization in ray communication #3233 has implemented lazy initialization of metrics ,so it's not necessary to initialize it in ray communication.

Related issue number

Fixed #3263

Fixes #xxxx

Check code requirements

• [ ] tests added / passed (if needed)
• [ ] Ensure all linting tests pass, see here for how to run them