Panic when there is a shape mismatch in Arrays

[coastalwhite]

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

import polars as pl

a = pl.Series('a', [[1], [2]], pl.Array(pl.Int8, 1))
b = pl.Series('b', [[1]], pl.Array(pl.Int8, 1))

c = a == b

Log output

thread '<unnamed>' panicked at crates/polars-compute/src/comparisons/array.rs:36:9:
assertion `left == right` failed
  left: 2
 right: 1

Issue description

Equality of two fixes size arrays with unequal lengths causes a panic.

Expected behavior

No panic

Installed versions

Replace this line with the output of pl.show_versions(). Leave the backticks in place.

[coastalwhite]

This is related to broadcasting behavior.