various bundle optimizations (#1549)

* fix: missing "@element-plus/icons-vue" dependency

* fix: update vite (40% faster builds)

* fix: don't include sentry in non-nightly builds

* fix: swap to variable fonts & don't include font files in repo

* fix: lazy load languages to not keep them in memory

* nit: revert vite to stable

* nit: retain `.json` message files in bundle

* nit: remove bundle analyzer

* fix: availableLocales does not include unloaded locales

eslint.config.mjs

@@ -29,6 +29,8 @@ export default defineConfig([
                 AssetBundleManager: 'readonly',
                 WINDOWS: 'readonly',
                 LINUX: 'readonly',
+                VERSION: 'readonly',
+                NIGHTLY: 'readonly',
                 webApiService: 'readonly',
                 process: 'readonly'
             }