fix: resolve test failures from stale dist and missing source aliases

- Add @blocknote/mantine and @blocknote/server-util to tests/vite.config.ts
  aliases so all unit tests resolve from source, never needing a dist build
- Rebuild stale tsdown-generated dist files (ariakit, mantine, shadcn, xl-ai,
  xl-ai-server, xl-multi-column) so Next.js serverUtil test can find mantine
- Fix TestExecutor type to accept void | Promise<void> — sync test executors
  are valid but the type was requiring Promise<void>, causing tsgo TS2322 errors

Author: nperez0111

tests/src/unit/types.ts

@@ -10,7 +10,10 @@ export type TestExecutor<
   B extends BlockSchema,
   I extends InlineContentSchema,
   S extends StyleSchema,
-> = (editor: BlockNoteEditor<B, I, S>, testCase: TestCase) => Promise<void>;
+> = (
+  editor: BlockNoteEditor<B, I, S>,
+  testCase: TestCase,
+) => void | Promise<void>;
 
 export type TestInstance<
   TestCase,

tests/vite.config.ts

@@ -49,6 +49,14 @@ export default defineConfig(
                   __dirname,
                   "../packages/react/src/",
                 ),
+                "@blocknote/mantine": path.resolve(
+                  __dirname,
+                  "../packages/mantine/src/",
+                ),
+                "@blocknote/server-util": path.resolve(
+                  __dirname,
+                  "../packages/server-util/src/",
+                ),
               } as Record<string, string>),
       },
     }) as UserConfig,