feat(single action button): allow rendering a single action as a button

[rileylnapier]

Description

previously a single action would make the entire message clickable

Type of change

• [ ] Bug fix (non-breaking change that fixes an issue)
• [ ] New feature (non-breaking change that adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)

Related issues

Fix [#1]()

[codecov[bot]]

Codecov Report

All modified lines are covered by tests :white_check_mark:

:exclamation: No coverage uploaded for pull request base (main@82ae0e9). Click here to learn what that means.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #505 +/- ## ======================================= Coverage ? 35.90% ======================================= Files ? 69 Lines ? 1192 Branches ? 364 ======================================= Hits ? 428 Misses ? 764 Partials ? 0 ```

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