[HUDI-4764] AwsglueSync Turn already exist error into warning

[parisni]

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Change Logs

This avoids the sync to fail when likely concurrent sync happens or other cases fixes #5960

Impact

Describe any public API or user-facing feature change or any performance impact.

Risk level: none | low | medium | high

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Contributor's checklist

• [ ] Read through contributor's guide
• [ ] Change Logs and Impact were stated clearly
• [ ] Adequate tests were added if applicable
• [ ] CI passed

[hudi-bot]

CI report:

• 7f0d738cfb3460682a3690ee53ecd5d002bdd37e Azure: SUCCESS

Bot commands

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• @hudi-bot run azure re-run the last Azure build

[parisni]

hi @yihua , I added 0.12.1 in the jira ticket so this is taken into account for the minor release