proxy: Upgrade TiFlash Proxy to fix known issue about BR and import

[CalvinNeo]

What problem does this PR solve?

Issue Number: close #9287, close #10141

Problem Summary: Update proxy to fix issues when running BR/import

What is changed and how it works?

pingcap/tidb-engine-ext#401 pick two BR/IMPORT related fixes from tikv

• tikv panic because SST files of sst_importer is deleted before raft ingest tikv/tikv#15053

tiflash server side (this PR):

for import sst service, write RPC will only continue when the local region epoch is same as the epoch in request
for cleanup logic, when the region is not found or region epoch is changed, we can delete the sst file
client side (will open it in TiDB repo):

for write RPC, retry from write for the error message "RequestTooNew", and retry from rescan region for the error message "RequestTooOld"

• BR download SST consider disk usage and report error if almost full  tikv/tikv#17224

Add a disk usage check when execute download and apply RPC from br.
When the disk is not Normal, the request would be rejected.

pick these two commit

• import: write RPC will check region epoch before continue tikv/tikv#15795
• br: pre-check TiKV disk space before download (#17238) tikv/tikv#17569

Check List

Tests

• Unit test
• Integration test
• Manual test (add detailed scripts or steps below)
• No code

Side effects

• Performance regression: Consumes more CPU
• Performance regression: Consumes more Memory
• Breaking backward compatibility

Documentation

• Affects user behaviors
• Contains syntax changes
• Contains variable changes
• Contains experimental features
• Changes MySQL compatibility

Release note

Fix the panic issue caused by accidental deletion of SST files during running `IMPORT INTO` or `BR restore`

[JaySon-Huang]

/hold

Running internal testing

[CalvinNeo]

[JaySon-Huang]

/unhold

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: JaySon-Huang, Lloyd-Pottiger

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• OWNERS [JaySon-Huang,Lloyd-Pottiger]

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2025-05-28 03:26:24.046980218 +0000 UTC m=+412314.418767674: ☑️ agreed by JaySon-Huang.
• 2025-05-28 03:27:08.065325288 +0000 UTC m=+412358.437112753: ☑️ agreed by Lloyd-Pottiger.