ci: make rust ci faster, get ci green (#2782)

* Add `ci` profile for smaller build caches. This had a meaningful
impact in Lance, and I expect a similar impact here.
https://github.com/lancedb/lance/pull/5236
* Get caching working in Rust. Previously was not working due to
`workspaces: rust`.
* Get caching working in NodeJs lint job. Previously wasn't working
because we installed the toolchain **after** we called `- uses:
Swatinem/rust-cache@v2`, which invalidates the cache locally.
* Fix broken pytest from async io transition
(`pytest.PytestRemovedIn9Warning`)
* Altered `get_num_sub_vectors` to handle bug in case of 4-bit PQ. This
was cause of `rust future panicked: unknown error`. Raised an issue
upstream to change panic to error:
https://github.com/lancedb/lance/issues/5257
* Call `npm run docs` to fix doc issue.
* Disable flakey Windows test for consistency. It's just an OS-specific
timer issue, not our fault.
* Fix Windows absolute path handling in namespaces. Was causing CI
failure `OSError: [WinError 123] The filename, directory name, or volume
label syntax is incorrect: `

python/python/tests/test_fts.py

@@ -32,6 +32,7 @@ import numpy as np
 import pyarrow as pa
 import pandas as pd
 import pytest
+import pytest_asyncio
 from utils import exception_output
 
 pytest.importorskip("lancedb.fts")
@@ -90,7 +91,7 @@ def table(tmp_path) -> ldb.table.LanceTable:
     return table
 
 
-@pytest.fixture
+@pytest_asyncio.fixture
 async def async_table(tmp_path) -> ldb.table.AsyncTable:
     # Use local random state to avoid affecting other tests
     rng = np.random.RandomState(42)
@@ -253,7 +254,7 @@ def test_search_fts(table, use_tantivy):
 
 @pytest.mark.asyncio
 async def test_fts_select_async(async_table):
-    tbl = await async_table
+    tbl = async_table
     await tbl.create_index("text", config=FTS())
     await tbl.create_index("text2", config=FTS())
     results = (
@@ -338,7 +339,6 @@ def test_search_fts_phrase_query(table):
 
 @pytest.mark.asyncio
 async def test_search_fts_phrase_query_async(async_table):
-    async_table = await async_table
     await async_table.create_index("text", config=FTS(with_position=False))
     try:
         phrase_results = (
@@ -393,7 +393,6 @@ def test_search_fts_specify_column(table):
 
 @pytest.mark.asyncio
 async def test_search_fts_async(async_table):
-    async_table = await async_table
     await async_table.create_index("text", config=FTS())
     results = await async_table.query().nearest_to_text("puppy").limit(5).to_list()
     assert len(results) == 5
@@ -424,7 +423,6 @@ async def test_search_fts_async(async_table):
 
 @pytest.mark.asyncio
 async def test_search_fts_specify_column_async(async_table):
-    async_table = await async_table
     await async_table.create_index("text", config=FTS())
     await async_table.create_index("text2", config=FTS())