docs: Add note about using use hook in useContext documentation

[vishal-tambi]

In order to increase developers' awareness of the use() hook's ability to read from context, particularly in the context of React Server Components (such as Next.js apps), this PR adds a note to the useContext documentation page.

📌 Why has this changed?
Only Client Components can use useContext().

Use() offers greater flexibility, async values, and support for Server Components.

This note assists developers in avoiding misunderstandings and provides guidance on which hook to use based on the type of component.

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