fix: Remove trailing colon from incomplete error message in HoodieTableMetadataUtil

[shangxinli]

Describe the issue this Pull Request addresses

The exception message in HoodieTableMetadataUtil.deleteMetadataTablePartition() ends with a trailing : which appears incomplete and looks like a formatting artifact.

Summary and Changelog

Summary:
Remove the trailing : from the error message in HoodieTableMetadataUtil when failing to check existence of a metadata table partition.

Changelog:

• Changed "Failed to check existence of MDT partition %s at path %s: " to "Failed to check existence of MDT partition %s at path %s" in HoodieTableMetadataUtil.java:2259. The cause exception is already passed as the second argument to HoodieMetadataException, so the trailing colon adds no value.

Impact

Public API Changes:
None.

User-Facing Changes:
Slightly cleaner error message when metadata table partition check fails.

Performance Impact:
None.

Risk Level

Risk Level: low

Justification:

• Single character removal in an error message string
• No logic changes
• The root cause exception is already chained via the constructor

Documentation Update

No documentation changes needed.

Contributor's checklist

• Read through contributor's guide
• Enough context is provided in the sections above
• Adequate tests were added if applicable
• Commits are signed and follow conventions

[codecov-commenter]

Codecov Report

❌ Patch coverage is 0% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 57.28%. Comparing base (057af9e) to head (5a8b2ed).

Files with missing lines	Patch %	Lines
.../apache/hudi/metadata/HoodieTableMetadataUtil.java	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff            @@
##             master   #18233   +/-   ##
=========================================
  Coverage     57.28%   57.28%           
- Complexity    18532    18535    +3     
=========================================
  Files          1944     1944           
  Lines        106126   106126           
  Branches      13118    13118           
=========================================
+ Hits          60793    60797    +4     
  Misses        39610    39610           
+ Partials       5723     5719    -4     

Flag	Coverage Δ
hadoop-mr-java-client	45.37% <0.00%> (-0.04%)	⬇️
spark-java-tests	47.43% <0.00%> (+<0.01%)	⬆️
spark-scala-tests	45.51% <0.00%> (+<0.01%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
.../apache/hudi/metadata/HoodieTableMetadataUtil.java	77.00% <0.00%> (-0.08%)	⬇️

... and 9 files with indirect coverage changes

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[hudi-bot]

CI report:

• 5a8b2ed Azure: SUCCESS

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