[lszskye]

Purpose

Blob view resolution previously used a temporary upstream warehouse override
or inferred the warehouse from the table's storage path. This could select
the wrong warehouse for REST catalogs.

• Remove blob-view-upstream-warehouse and its parsing, accessor, and usages.
• Build dependency contexts using the attached catalog's warehouse, retaining
  path-based warehouse inference when no catalog is attached.
• Merge dependency options with explicit read options taking precedence over
  catalog options, and catalog options over table options.
• Generate X-Paimon-Read-Via only when the merged metastore is REST, a table
  identifier is available, and the merged options contain no existing header.
• Keep catalog settings out of ReadContextBuilder::Finish() so dependency
  catalog options do not override the upstream reader's own table settings.

Tests

• Cover option precedence, final-metastore header generation, existing-header
  preservation, branch identifiers, and filesystem scheme propagation.
• Verify read options override table options through TableRead::Create().
• Update blob integration tests to resolve upstream tables without the removed
  warehouse override.

API and Format

• Breaking API/configuration change: remove
  Options::BLOB_VIEW_UPSTREAM_WAREHOUSE and its warehouse override behavior.

[lxy-9602]

+1

[lxy-9602]

+1