Update getContext() usage examples with namespace argument

[dhananjaykuber]

Fixes #63366

What?

This PR updates the documentation for the getContext() function to separate usage examples with and without namespace arguments. It provides clear, distinct examples and explanations for each case.

Why?

This PR addresses the need for clearer documentation on how to use the getContext() function both with and without the optional namespace argument. It helps developers understand the different use cases and how to retrieve specific parts of the context, improving the overall usability and clarity of the documentation.

How?

Adding a section for using getContext(namespace) with a namespace argument.

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[fabiankaegy]

Thanks for adding these docs! :)

What you have written at the moment is not how the API is working however.

The namespace you pass to the getContext function needs to be the namespace of an interactive region (data-wp-interactive).

So in this case you would want to use getContext("myPlugin")

And the getContext function always gets the entire context object. There is no helper function to only get part of a context.

[dhananjaykuber]

Hi @fabiankaegy,

Thank you for your feedback. I have updated the documentation to reflect the correct usage of the getContext function with the namespace of an interactive region (data-wp-interactive). Can you please review it once more to ensure everything is accurate?

[fabiankaegy]

Left one minor suggestion :) Otherwise this looks great 👍

Thanks for updating it :)