Fix tensor_simple label ordering in Rust and C++ to match Python (#…

…4035)

### What

The label ordering was inverted in the C++ and Rust version of
`tensor_simple`, compared to Python.

### Checklist
* [x] I have read and agree to [Contributor
Guide](https://github.com/rerun-io/rerun/blob/main/CONTRIBUTING.md) and
the [Code of
Conduct](https://github.com/rerun-io/rerun/blob/main/CODE_OF_CONDUCT.md)
* [x] I've included a screenshot or gif (if applicable)
* [x] I have tested [demo.rerun.io](https://demo.rerun.io/pr/4035) (if
applicable)
* [x] The PR title and labels are set such as to maximize their
usefulness for the next release's CHANGELOG

- [PR Build Summary](https://build.rerun.io/pr/4035)
- [Docs
preview](https://rerun.io/preview/4dbc6b9bf35da4355b082f0b453cc0d5851aa5e8/docs)
<!--DOCS-PREVIEW-->
- [Examples
preview](https://rerun.io/preview/4dbc6b9bf35da4355b082f0b453cc0d5851aa5e8/examples)
<!--EXAMPLES-PREVIEW-->
- [Recent benchmark results](https://ref.rerun.io/dev/bench/)
- [Wasm size tracking](https://ref.rerun.io/dev/sizes/)

docs/code-examples/tensor_simple.cpp

@@ -17,6 +17,6 @@ int main() {
 
     rec.log(
         "tensor",
-        rerun::Tensor({8, 6, 3, 5}, data).with_dim_names({"batch", "channel", "height", "width"})
+        rerun::Tensor({8, 6, 3, 5}, data).with_dim_names({"width", "height", "channel", "batch"})
     );
 }

docs/code-examples/tensor_simple.rs

@@ -10,7 +10,7 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
     data.map_inplace(|x| *x = rand::random());
 
     let tensor =
-        rerun::Tensor::try_from(data)?.with_dim_names(["batch", "channel", "height", "width"]);
+        rerun::Tensor::try_from(data)?.with_dim_names(["width", "height", "channel", "batch"]);
     rec.log("tensor", &tensor)?;
 
     Ok(())