New lexicons aren't propagated to some codegenned source files #1

Running pnpm build doesn't run the command for generating files like packages/appview/src/lexicons/index.ts.

I only noticed because I tried to add a new lexicon. I updated the lexgen command in both packages/lexicon/package.json and packages/appview/package.json to include the new lexicon's directory, but it wasn't enough. After changing the build command in packages/appview/package.json to pnpm lexgen && tsup, I got pnpm build to generate a new packages/appview/src/lexicons/index.ts that included the new lexicons I defined.