🚨(eslint) add missing rules

We recently upgraded to Eslint v9, it seems that
it is missing some rules that we had previously.
We add them back:
- @typescript-eslint/no-inferrable-types
- @typescript-eslint/no-floating-promises

src/frontend/packages/eslint-plugin-docs/typescript.js

@@ -22,7 +22,9 @@ const typescriptConfig = {
     '@typescript-eslint': typescriptEslint,
   },
   rules: {
+    '@typescript-eslint/no-inferrable-types': 'error',
     '@typescript-eslint/no-explicit-any': 'error',
+    '@typescript-eslint/no-floating-promises': 'error',
     '@typescript-eslint/no-non-null-assertion': 'error',
     '@typescript-eslint/no-unnecessary-type-assertion': 'error',
     '@typescript-eslint/no-unsafe-argument': 'error',