[#2241] improvement(server): Introduce storage flush operation timeout cancel to avoid disk hang

[zuston]

What changes were proposed in this pull request?

Introduce storage flush operation timeout cancel to avoid disk hang

Why are the changes needed?

For #2241

Does this PR introduce any user-facing change?

Yes. rss.server.storage.flushOptionTimeoutSec is introduced, the default value = -1 means this timeout cancel will not be activated by default

How was this patch tested?

unit tests and existing tests.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 66.66667% with 13 lines in your changes missing coverage. Please review.

Project coverage is 52.43%. Comparing base (10c02cd) to head (130b3bb). Report is 8 commits behind head on master.

Files with missing lines	Patch %	Lines
...pache/uniffle/server/DefaultFlushEventHandler.java	30.76%	8 Missing and 1 partial :warning:
.../uniffle/common/future/CompletableFutureUtils.java	80.95%	2 Missing and 2 partials :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #2247 +/- ## ============================================ + Coverage 52.15% 52.43% +0.27% + Complexity 3517 2959 -558 ============================================ Files 550 467 -83 Lines 31672 22185 -9487 Branches 2707 2033 -674 ============================================ - Hits 16518 11632 -4886 + Misses 14098 9815 -4283 + Partials 1056 738 -318 ```

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[github-actions[bot]]

Test Results

 2 956 files  +15   2 956 suites  +15   6h 10m 50s ⏱️ - 6m 29s  1 092 tests + 1   1 090 ✅ + 1   2 💤 ±0  0 ❌ ±0  13 685 runs  +15  13 655 ✅ +15  30 💤 ±0  0 ❌ ±0 

Results for commit 92ae0798. ± Comparison against base commit 4db95c3c.

:recycle: This comment has been updated with latest results.