fix: resolve Prism CJS loading crash in Vite dev mode

Remove the prismSetup module that imported prismjs directly — it
caused Vite to pre-bundle prismjs into a separate chunk from
@lexical/code-prism, breaking the CJS require chain.  Language
components tried to call Prism.languages.extend() before the base
grammars were available, crashing the app.

Instead, add optimizeDeps.include for prismjs and @lexical/code-prism
so Vite pre-bundles them together, preserving the correct CJS
evaluation order within a single chunk.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

electron.vite.config.ts

@@ -33,6 +33,12 @@ export default defineConfig({
     build: {
       outDir: 'dist/renderer',
     },
+    optimizeDeps: {
+      // @lexical/code-prism depends on prismjs + its language components via
+      // CJS require().  Vite must pre-bundle them together so that the Prism
+      // global is available when component IIFEs execute.
+      include: ['prismjs', '@lexical/code-prism'],
+    },
     plugins: [react(), tailwindcss()],
     resolve: {
       alias: {