`shikiTheme` should prop have priority over the code plugin default theme

[IcaroG]

Problem Statement

When using the default code plugin, it would be good to control the theme via the prop. Atleast that is how the documentation makes it seem like it should work https://streamdown.ai/docs/usage#configuration

Proposed Solution

Change the order in here to prioritize the prop instead of the plugin default theme

streamdown/packages/streamdown/index.tsx

Line 612 in 5f64751

shikiTheme: plugins?.code?.getThemes() ?? shikiTheme,

Alternatives Considered

No response

Use Case

Priority

Nice to have

Contribution

• I am willing to help implement this feature

Additional Context

No response