s3(ticdc): do not report unretryable error when initializing s3 storage (#11312)

[ti-chi-bot]

This is an automated cherry-pick of #11312

What problem does this PR solve?

Issue Number: close #11311

What is changed and how it works?

do not report unretryable error when initializing s3 storage, because this kind of error is retryale, return ErrStorageInitialize if the external storage initialization fails.

Check List

Tests

• Manual test (add detailed scripts or steps below)

Questions

Will it cause performance regression or break compatibility?

Do you need to update user documentation, design documentation or monitoring documentation?

Release note

`None`.

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 2 lines in your changes missing coverage. Please review.

Please upload report for BASE (release-8.1@20ee93f). Learn more about missing BASE report.

Additional details and impacted files

Components	Coverage Δ
cdc	61.6281% <0.0000%> (?)
dm	51.2526% <0.0000%> (?)
engine	63.3950% <0.0000%> (?)

Flag	Coverage Δ
unit	57.3936% <0.0000%> (?)

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@@               Coverage Diff                @@
##             release-8.1     #11319   +/-   ##
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  Coverage               ?   57.3936%           
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  Files                  ?        852           
  Lines                  ?     125716           
  Branches               ?          0           
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  Hits                   ?      72153           
  Misses                 ?      48145           
  Partials               ?       5418           

[ti-chi-bot]

@ti-chi-bot: The following tests failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
pull-cdc-integration-pulsar-test	3239c6b	link	true	/test cdc-integration-pulsar-test
pull-dm-integration-test	3239c6b	link	true	/test dm-integration-test
pull-cdc-integration-kafka-test	3239c6b	link	true	/test cdc-integration-kafka-test

Full PR test history. Your PR dashboard.

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[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: sdojjy

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