Objectstore integration on native write and merge path

[rayshrey]

Description

[Describe what this change achieves]

Related Issues

Resolves #[Issue number to be closed when this PR is merged]

Check List

• Functionality includes testing.
• API changes companion pull request created, if applicable.
• Public documentation issue/PR created, if applicable.

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[github-actions]

PR Code Analyzer ❗

AI-powered 'Code-Diff-Analyzer' found issues on commit c45a08c.

Path	Line	Severity	Description
sandbox/plugins/parquet-data-format/src/main/rust/Cargo.toml	17	high	New dependency added: 'object_store' pulled in via workspace. This crate supports multiple storage backends (local FS, S3, GCS, Azure Blob), expanding the attack surface and network reachability of the native layer. Maintainers must verify the workspace-pinned version and enabled features.
sandbox/plugins/parquet-data-format/src/main/rust/Cargo.toml	30	high	New dependency added: 'tokio-util' with feature 'io-util' via workspace. Introduces a new async I/O bridge (SyncIoBridge) into the native write path. Verify workspace version and that no transitive features enabling network access are inadvertently activated.
sandbox/plugins/parquet-data-format/src/main/rust/Cargo.toml	28	high	New dependency added: 'futures' via workspace. Adds the futures crate to the native Rust library. Maintainers must verify the workspace-pinned version and that no unexpected transitive dependencies are introduced.
sandbox/plugins/parquet-data-format/src/main/rust/Cargo.toml	27	high	New dependency added: 'bytes' via workspace. Maintainers must verify the workspace-pinned version and that no unexpected transitive dependencies are introduced.
sandbox/plugins/parquet-data-format/src/main/rust/Cargo.toml	17	high	Feature addition to existing dependency: 'parquet' gains the 'object_store' feature, pulling in the async writer stack (AsyncArrowWriter + ParquetObjectWriter). This activates previously-disabled code paths and additional transitive crates; maintainers must verify no unintended network-capable backends are enabled.

The table above displays the top 10 most important findings.

Total: 5 | Critical: 0 | High: 5 | Medium: 0 | Low: 0

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