feat(rspack): make target property optional (#28785)

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## Current Behavior
<!-- This is the behavior we have today -->
The `target` property is currently required by the `@nx/rspack:rspack`
executor, but is not by the `@nx/webpack:webpack` executor.
This can make migrating between the two a little more difficult.


## Expected Behavior
<!-- This is the behavior we should expect with the changes in this PR
-->
Target should be handled by Nx's `withWeb` helper or set intentionally
by the user in their `rspack.config` file.

## Related Issue(s)
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merged. -->

Fixes #

docs/generated/packages/rspack/executors/rspack.json

@@ -155,7 +155,7 @@
         "description": "Generates a `package.json` and pruned lock file with the project's `node_module` dependencies populated for installing in a container. If a `package.json` exists in the project's directory, it will be reused with dependencies populated."
       }
     },
-    "required": ["target", "main", "outputPath", "tsConfig", "rspackConfig"],
+    "required": ["main", "outputPath", "tsConfig", "rspackConfig"],
     "definitions": {
       "assetPattern": {
         "oneOf": [

packages/rspack/src/executors/rspack/rspack.impl.ts

@@ -13,6 +13,7 @@ export default async function* runExecutor(
   context: ExecutorContext
 ) {
   process.env.NODE_ENV ??= options.mode ?? 'production';
+  options.target ??= 'web';
 
   if (isMode(process.env.NODE_ENV)) {
     options.mode = process.env.NODE_ENV;

packages/rspack/src/executors/rspack/schema.d.ts

@@ -1,7 +1,7 @@
 import type { Mode } from '@rspack/core';
 
 export interface RspackExecutorSchema {
-  target: 'web' | 'node';
+  target?: 'web' | 'node';
   main: string;
   index?: string;
   tsConfig: string;

packages/rspack/src/executors/rspack/schema.json

@@ -133,7 +133,7 @@
       "description": "Generates a `package.json` and pruned lock file with the project's `node_module` dependencies populated for installing in a container. If a `package.json` exists in the project's directory, it will be reused with dependencies populated."
     }
   },
-  "required": ["target", "main", "outputPath", "tsConfig", "rspackConfig"],
+  "required": ["main", "outputPath", "tsConfig", "rspackConfig"],
   "definitions": {
     "assetPattern": {
       "oneOf": [

packages/rspack/src/utils/with-web.ts

@@ -40,6 +40,7 @@ export function withWeb(opts: WithWebOptions = {}) {
 
     return {
       ...config,
+      target: config.target ?? 'web',
       experiments: {
         css: true,
       },