Remove RequestContext from JsonProcessingMetricsReporter

[Hazel-Datastax]

What this PR does:
When I am working on the MCP support for collection commands, I encounter a No REST request in progress error.

The reason is that JsonProcessingMetricsReporter is @ApplicationScoped but injects @RequestScoped RequestContext. When an MCP request (non-JAX-RS) triggers command execution, the CDI proxy for RequestContext tries to use the JAX-RS SecurityContext constructor → IllegalStateException: No REST request in progress.

The metrics reporter only uses requestContext.tenant() in getCustomTags(). Since all callers already have tenant available via commandContext.requestContext().tenant(), I think we can remove the RequestContext and simply pass the tenant as a parameter.

Which issue(s) this PR fixes:
Fixes #

Checklist

• Changes manually tested
• Automated Tests added/updated
• Documentation added/updated
• CLA Signed: DataStax CLA

[github-actions]

📈 Integration Test Coverage Delta vs Main Branch (dse69-it)

Metric	Value
Main Branch	70.58%
This PR	70.59%
Delta	🟢 +0.01%
✅ Coverage improved!

[github-actions]

Integration Test Coverage Report (dse69-it)

Overall Project	70.59%	🍏
Files changed	95.9%	🍏

File	Coverage
InsertOneCommandResolver.java	100%	🍏
InsertManyCommandResolver.java	100%	🍏
CollectionInsertAttemptBuilder.java	100%	🍏
JsonProcessingMetricsReporter.java	98.29% -1.71%	🍏
DeleteCollectionOperation.java	95.7%	🍏
ReadAndUpdateCollectionOperation.java	95.42%	🍏
InsertCollectionOperation.java	91.83%	🍏
FindCollectionOperation.java	88.51%	🍏
DocumentShredder.java	83.18% -0.25%	🍏
CollectionReadOperation.java	80.15%	🍏

[github-actions]

📈 Integration Test Coverage Delta vs Main Branch (hcd-it)

Metric	Value
Main Branch	72.32%
This PR	72.33%
Delta	🟢 +0.01%
✅ Coverage improved!

[github-actions]

Integration Test Coverage Report (hcd-it)

Overall Project	72.33%	🍏
Files changed	95.9%	🍏

File	Coverage
InsertOneCommandResolver.java	100%	🍏
InsertManyCommandResolver.java	100%	🍏
CollectionInsertAttemptBuilder.java	100%	🍏
JsonProcessingMetricsReporter.java	98.29% -1.71%	🍏
ReadAndUpdateCollectionOperation.java	96.9%	🍏
DeleteCollectionOperation.java	95.7%	🍏
InsertCollectionOperation.java	94.62%	🍏
FindCollectionOperation.java	94.32%	🍏
DocumentShredder.java	85.47% -0.25%	🍏
CollectionReadOperation.java	80.15%	🍏

[github-actions]

📈 Unit Test Coverage Delta vs Main Branch

Metric	Value
Main Branch	50.15%
This PR	50.16%
Delta	🟢 +0.01%
✅ Coverage improved!

[github-actions]

Unit Test Coverage Report

Overall Project	50.16% -0.06%	🍏
Files changed	50%	❌

File	Coverage
DeleteCollectionOperation.java	98.87%	🍏
ReadAndUpdateCollectionOperation.java	96.9%	🍏
CollectionInsertAttemptBuilder.java	96.1%	🍏
InsertCollectionOperation.java	94.84%	🍏
FindCollectionOperation.java	80.05%	🍏
CollectionReadOperation.java	73.68%	🍏
DocumentShredder.java	65.59% -1.19%	❌
InsertOneCommandResolver.java	0% -16.92%	❌
InsertManyCommandResolver.java	0% -10.78%	❌
JsonProcessingMetricsReporter.java	0% -21.93%	❌

[tatu-at-datastax]

LGTM