ci: fix Python and Node CI on main (#2700)

Example failure:
https://github.com/lancedb/lancedb/actions/runs/18237024283/job/51932651993

.github/workflows/nodejs.yml

@@ -6,6 +6,7 @@ on:
       - main
   pull_request:
     paths:
+      - Cargo.toml
       - nodejs/**
       - .github/workflows/nodejs.yml
       - docker-compose.yml

.github/workflows/python.yml

@@ -6,6 +6,7 @@ on:
       - main
   pull_request:
     paths:
+      - Cargo.toml
       - python/**
       - .github/workflows/python.yml
 

docs/src/js/classes/MergeInsertBuilder.md

@@ -52,6 +52,30 @@ the merge result
 
 ***
 
+### useIndex()
+
+```ts
+useIndex(useIndex): MergeInsertBuilder
+```
+
+Controls whether to use indexes for the merge operation.
+
+When set to `true` (the default), the operation will use an index if available
+on the join key for improved performance. When set to `false`, it forces a full
+table scan even if an index exists. This can be useful for benchmarking or when
+the query optimizer chooses a suboptimal path.
+
+#### Parameters
+
+* **useIndex**: `boolean`
+    Whether to use indices for the merge operation. Defaults to `true`.
+
+#### Returns
+
+[`MergeInsertBuilder`](MergeInsertBuilder.md)
+
+***
+
 ### whenMatchedUpdateAll()
 
 ```ts

rust/lancedb/src/table.rs

@@ -1398,19 +1398,19 @@ impl Tags for NativeTags {
     }
 
     async fn create(&mut self, tag: &str, version: u64) -> Result<()> {
-        let dataset = self.dataset.get_mut().await?;
+        let dataset = self.dataset.get().await?;
         dataset.tags().create(tag, version).await?;
         Ok(())
     }
 
     async fn delete(&mut self, tag: &str) -> Result<()> {
-        let dataset = self.dataset.get_mut().await?;
+        let dataset = self.dataset.get().await?;
         dataset.tags().delete(tag).await?;
         Ok(())
     }
 
     async fn update(&mut self, tag: &str, version: u64) -> Result<()> {
-        let dataset = self.dataset.get_mut().await?;
+        let dataset = self.dataset.get().await?;
         dataset.tags().update(tag, version).await?;
         Ok(())
     }