fix(command): Merge watchPlugins for lint

We were overriding the base `typeahead` watch plugins from the base config in the lint config in order to set the `watch-fix` plugin. Now the `watch-fix` plugin is merged.

Author: benmvp

src/commands/test/project-lint.js

@@ -4,5 +4,8 @@ module.exports = {
   ...BASE_CONFIG,
   runner: 'jest-runner-eslint',
   displayName: 'lint',
-  watchPlugins: ['jest-runner-eslint/watch-fix'],
+  watchPlugins: [
+    ...BASE_CONFIG.watchPlugins,
+    'jest-runner-eslint/watch-fix'
+  ],
 }