[Bug] Incorrect size in `LocalStorageMeta`

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- [X] I have searched in the [issues](https://github.com/apache/incubator-uniffle/issues?q=is%3Aissue) and found no similar issues.

### Describe the bug

I found some shuffle servers in our cluster write shuffle data to HDFS frequently. And then i found the size stored in `LocalStorageMeta` is incorrect.
Maybe we should update the metrics in the following method. There may be other places that have been missed.
https://github.com/apache/incubator-uniffle/blob/b2154c722f30ee31a867561f550254842c33cbab/server/src/main/java/org/apache/uniffle/server/storage/LocalStorageManager.java#L346

Other suggestion:
1. Maybe it is not a good way that judging if the local disk can be written by using this metric, because this metric is easily overlooked and it is hard to guarantee it's accurate. And #1071 trying to change this.
2. I found `shuffleMetaMap` in `LocalStorageMeta` is useless, maybe we should remove it. And then we can remove `LocalStorageMeta` at the same time.

### Affects Version(s)

master

### Uniffle Server Log Output

_No response_

### Uniffle Engine Log Output

_No response_

### Uniffle Server Configurations

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### Uniffle Engine Configurations

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### Additional context

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### Are you willing to submit PR?

- [ ] Yes I am willing to submit a PR!

Start with the referenced update path in server/src/main/java/org/apache/uniffle/server/storage/LocalStorageManager.java around line 346, then inspect LocalStorageMeta and its shuffleMetaMap usage. Trace all places that update the stored size and compare them with the HDFS-writing path; done means the size metric is accurate across those paths and the proposed cleanup is resolved against #1071.

Written by the indexing model from the issue text.