fix: correct remote materialized view refresh results and options (#4672)

Remote materialized-view refreshes drained the SQL result and then
fabricated `mode=rebuild`, `rows_written=<total view rows>`, and
`source_version=0`. This made incremental refreshes report incorrect
statistics.

Make these three result fields optional across Rust, Python, and
TypeScript, and leave them unset for remote SQL refreshes. Remove the
post-refresh row count request. Local refreshes continue to populate all
metrics, and `version` remains the view version observed after
completion. Remote per-operation statistics remain unavailable until the
SQL job adapter can retrieve them.

Expose the forced-rebuild option through the Rust builder,
synchronous/asynchronous Python refresh and job methods, and TypeScript
refresh. Remote `full=true` sends `WITH (full = true)`; the default lets
the server choose its refresh mode. Local source-version pinning and
remote job cancellation are preserved.

Local refresh regression tests respect the `experimental-functions`
build gate, while remote refresh coverage also runs in default builds.

Validation:

- Rust: 20 materialized-view tests and 21 remote SQL tests passed with
`remote,experimental-functions`; `cargo fmt --all` passed.
- Python: rebuilt the extension in the uv-managed environment. The
default build passed 23 tests with 27 feature-dependent skips. The
opt-in build passed 61 tests with 3 expected default-build-only skips,
covering the materialized-view suite and 14 async query-serialization
cases from current main. Python Ruff lint and formatting checks passed.
- TypeScript: default and opt-in native builds and TypeScript
compilation passed. The default build passed 5 tests with 10 expected
feature-dependent skips; the opt-in build passed all 14
materialized-view tests with the default-build-only test skipped.
Lint/format checks and documentation generation passed.
- Repository-wide `ruff check .` reports 48 pre-existing violations in
unchanged `docs/web-tests` files; `ruff check python` passes.

Fixes #4670

<!-- lance-gatekeeper-fix:v1 agent=ece43ec4b88a48d1789f60005fa3ecfc
generation=1 -->

Co-authored-by: Gatefixer <313497061+lancedb-gatefixer[bot]@users.noreply.github.com>
Co-authored-by: Xuanwo <github@xuanwo.io>

nodejs/__test__/materialized_view.test.ts

@@ -6,6 +6,7 @@ import * as tmp from "tmp";
 import { Connection, connect } from "../lancedb";
 import {
   DEFINITION_META_KEY,
+  MaterializedView,
   definitionFromMetadata,
 } from "../lancedb/materialized_view";
 import { experimentalFunctionsEnabled } from "../lancedb/native";
@@ -94,20 +95,33 @@ describe("materialized views", () => {
     );
   });
 
-  experimentalTest("fully refreshes after an append", async () => {
-    const view = await db.createMaterializedView("copy", "people", {
-      withNoData: true,
-    });
-    await view.refresh();
+  experimentalTest.each([false, true])(
+    "fully refreshes after an append (full=%s)",
+    async (full) => {
+      const view = await db.createMaterializedView("copy", "people", {
+        withNoData: true,
+      });
+      await view.refresh();
 
-    const people = await db.openTable("people");
-    await people.add([{ name: "alan", age: 41 }]);
-    const result = await view.refresh();
-    expect(result.mode).toBe("rebuild");
-    expect(Number(result.rowsWritten)).toBe(4);
-    expect(await view.table().countRows()).toBe(4);
+      const people = await db.openTable("people");
+      await people.add([{ name: "alan", age: 41 }]);
+      const result = await view.refresh({ full });
+      expect(result.mode).toBe("rebuild");
+      expect(Number(result.rowsWritten)).toBe(4);
+      expect(await view.table().countRows()).toBe(4);
 
-    expect((await view.refresh()).mode).toBe("rebuild");
+      expect((await view.refresh()).mode).toBe("rebuild");
+    },
+  );
+
+  it("forwards a forced refresh and preserves absent remote metrics", async () => {
+    const view = new MaterializedView(await db.openTable("people"));
+    const remoteResult = { version: 42 };
+    const refresh = jest
+      .spyOn(view.table(), "refreshMaterializedView")
+      .mockResolvedValue(remoteResult);
+    expect(await view.refresh({ full: true })).toEqual(remoteResult);
+    expect(refresh).toHaveBeenCalledWith(undefined, true);
   });
 
   experimentalTest("lists views and rejects non-views", async () => {