refactor(data): migrate Daft SQL bindings to new connectors

[jiangxt2]

Purpose

This PR migrates the Daft ClickHouse/Doris reads from the daft-olap-connectors package to two per-connector public facades: daft-clickhouse and daft-doris. The old package identity is removed from binding descriptors, dependency checks, install hints and capability receipts, and explicit parallel sharding now fails closed because the target connectors only support single and auto splits.

What Changes

• Add DaftClickHouseBinding and DaftDorisBinding backed by the public daft_clickhouse.read_clickhouse and daft_doris.read_doris facades; new binding IDs daft_clickhouse.daft.clickhouse and daft_doris.daft.doris.
• Remove the daft-olap-connectors identity from descriptors, dependency checks, install hints and capability receipts; old package references are cleared from docs and E2E notes.
• Fail closed on explicit parallel shard requirements (diagnostic parallel_sql_read_unsupported) and reject unsupported Doris transports.
• Declare database drivers in extras (clickhouse-connect[arrow,async], PyMySQL, ADBC) and lock Daft 0.7.23; the unpublished daft-clickhouse and daft-doris wheels stay outside uv.lock and are installed separately in E2E/runtime environments.
• Update binding tests for fail-closed parallel, Doris mysql/flight transports, descriptor identity and missing-package diagnostics.

Breaking change: the Daft SQL binding IDs change from daft_olap.daft.clickhouse / daft_olap.daft.doris to daft_clickhouse.daft.clickhouse / daft_doris.daft.doris without an old-ID fallback; persisted configurations or receipts using the old IDs require migration.

Test Plan

• Affected data binding tests pass (75 passed, 1 skipped)
• Ruff format --check, ruff check and diff check pass
• Integration tests pass (pending local connector wheel injection and real Docker/Ray E2E)

Open Source Checklist

• No internal credentials, URLs, or tokens exposed
• New external dependencies reviewed for license compatibility (pending review of adbc-driver-manager, adbc-driver-flightsql and related driver additions)