Example python_rust_compiled_function build fails in 43.1

[bwrob]

Checks

• I have checked that this issue has not already been reported.
• I have confirmed this bug exists on the latest version of Polars.

Reproducible example

This concerns python_rust_compiled_function

Log output

No response

Issue description

The included example python_rust_compiled_function doesn't build with versions 43.1

This is mostly due to the changes:
#18425

Needed changes include:

• switch to PlSmallStr in inputs to ffi::import_array_from_c, ArrowField::new and Series::try_from

Expected behavior

The official example builds and works.

Installed versions

[dependencies]
polars-arrow = { version = "0.43.1"}
polars = { version = "0.43.1"}
pyo3 = { version = "0.22.3" }