gh-132527: fix: include 'w' in error message for array typecodes

[Vaid07-Techy]

gh-132527: Fix error message to include 'w' typecode in arraymodule.c

This PR fixes the ValueError message in arraymodule.c, adding 'w' to the list of valid typecodes. 'w' is currently a supported typecode, but it was missing from the error message when users tried to use it, causing confusion.

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[bedevere-app]

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[StanFromIreland]

This should be closed.

A pr already exists: #132529

In the future please check for existing PR's before submitting your own, you should probably look over the devguide too.

[tomasr8]

Thanks for the contribution @Vaid07-Techy! Unfortunately, as Stan said, there's already a PR that fixes this.
You can see if there's an open PR by checking the Linked PRs section of the issue (usually at the bottom).

That said, don't let this discourage you! I invite you to check the issue tracker for other issues :)

[Vaid07-Techy]

hey @StanFromIreland thanks for letting me know, as I'm new here I'm still learning how everything works here ..