fix(plugin-sdk): remove remaining bundled plugin src imports (openclaw#39638)

Verified:
- pnpm build
- pnpm check
- pnpm test:macmini

Co-authored-by: Kyle <3477429+kyledh@users.noreply.github.com>
Co-authored-by: Tak Hoffman <781889+Takhoffman@users.noreply.github.com>

src/plugin-sdk/bluebubbles.ts

@@ -75,6 +75,7 @@ export {
   resolveServicePrefixedTarget,
 } from "../imessage/target-parsing-helpers.js";
 export { stripMarkdown } from "../line/markdown-to-line.js";
+export { parseFiniteNumber } from "../infra/parse-finite-number.js";
 export { emptyPluginConfigSchema } from "../plugins/config-schema.js";
 export type { PluginRuntime } from "../plugins/runtime/types.js";
 export type { OpenClawPluginApi } from "../plugins/types.js";