Docs: "Component testing" of "Context" article edits

Describe the bug

Some doc changes I'd like to see to the Context page, especailly in the "Component testing" section:

• The title "Component testing" is a bit misleading (this feature isn't specific to nor limited to testing), could we name it something like "Mounting components with context"?
• It's unclear to me reading through this documentation the scope of context when you call "setContext" within a wrapper. I imagine that because it's being called within "mount", that the shared context is relegated to that specific mount call, but it's not clear to me. Can we have some text mentioning specifically that the wrapper ensures the context is only assigned to that mounted component?

Reproduction

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Severity

annoyance