fix: rendering of \xc2\xa9 copyright symbol

[mattreid1]

The current specialCases in packages/layout/src/text/emoji.js only ignores the copyright symbol \xc2\xa9\xef\xb8\x8f and not the standard UTF-8 copyright symbol \xc2\xa9. The former has the VS-16 variation selector appended to the standard symbol, but the latter still appears to be treated as an emoji and doesn't render.

This PR simply adds the standard copyright symbol \xc2\xa9 to the specialCases array along with some comments explaining why there appears to be two copyright symbols.

Before the fix:

After the fix:

[changeset-bot]

⚠️ No Changeset found

Latest commit: a41bf5d

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[wojtekmaj]

LGTM!

Can you please run yarn changeset as explained in CONTRIBUTORS.md?