Add Prism integration tests for Delta IO

[goutamadwant]

Adds Prism-based integration coverage for Delta Lake Managed IO.

The new tests verify that Prism can read:

• a table written with the current Delta 4.x dependencies
• a self-contained Delta 3.0-format table

This adds a dedicated Gradle task that builds the local Prism binary and runs only the Prism integration test class. The existing local and Dataflow integration tasks exclude the Prism-specific class so runner selection remains explicit. The Delta IO precommit workflow now runs the new task.

Fixes #38557

Testing

• ./gradlew :sdks:java:io:delta:build :sdks:java:io:delta:prismIntegrationTest --no-daemon --no-build-cache --rerun-tasks
• DeltaIOPrismIT: 2 tests, 0 failures

Checklist

• Linked the associated issue.
• Added integration coverage and ran the affected module build.
• CHANGES.md is not needed because this change only adds test and CI coverage.
• This is not a large contribution requiring an ICLA.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 58.17%. Comparing base (630c751) to head (9dfdf71).
⚠️ Report is 1 commits behind head on master.

Additional details and impacted files

@@             Coverage Diff              @@
##             master   #39764      +/-   ##
============================================
+ Coverage     55.99%   58.17%   +2.18%     
- Complexity     2277    13101   +10824     
============================================
  Files          1115     2523    +1408     
  Lines        175914   265755   +89841     
  Branches       1467    10795    +9328     
============================================
+ Hits          98496   154612   +56116     
- Misses        74912   105332   +30420     
- Partials       2506     5811    +3305     

Flag	Coverage Δ
java	64.28% <ø> (-11.36%)	⬇️

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[github-actions]

Assigning reviewers:

R: @ahmedabu98 for label java.
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