fix(core): script-based targets should be able to be modified in a project.json file (#27309)

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## Current Behavior
We don't infer scripts if any info for that target is present in
project.json. This results in the target dissapearing if the user tries
to modify the inferred target by providing info in project.json, for
example by providing dependsOn or similar.

A minimal repro of the issue looks something like this:

> packages/foo/package.json
```json
{
  "name": "foo",
  "scripts": {
    "build": "echo build"
  }
}
```

> packages/foo/project.json
```json
{
  "name": "foo",
  "targets": {
    "build": {
      "dependsOn": []
    }
  }
}
```

Attempting to run `nx build foo` results in "Cannot find configuration
for task foo:build", as we remove the target for not having an executor.

## Expected Behavior
The target remains as it can run the script, so we have to infer the
script to begin with.

## Related Issue(s)
<!-- Please link the issue being fixed so it gets closed when this is
merged. -->

Fixes #27258

(cherry picked from commit 25212e3)

Author: AgentEnder

packages/nx/src/plugins/package-json/create-nodes.spec.ts

@@ -570,13 +570,17 @@ describe('nx package.json workspaces plugin', () => {
             name: 'root',
             scripts: {
               build: 'echo build',
+              test: 'echo test',
             },
           }),
           'packages/a/project.json': JSON.stringify({
             targets: {
               'something-other-than-build': {
                 command: 'echo something-other-than-build',
               },
+              test: {
+                dependsOn: ['build-native'],
+              },
             },
           }),
         },
@@ -597,6 +601,7 @@ describe('nx package.json workspaces plugin', () => {
                     "targetGroups": {
                       "NPM Scripts": [
                         "build",
+                        "test",
                       ],
                     },
                   },
@@ -624,6 +629,16 @@ describe('nx package.json workspaces plugin', () => {
                       "executor": "@nx/js:release-publish",
                       "options": {},
                     },
+                    "test": {
+                      "executor": "nx:run-script",
+                      "metadata": {
+                        "runCommand": "npm run test",
+                        "scriptContent": "echo test",
+                      },
+                      "options": {
+                        "script": "test",
+                      },
+                    },
                   },
                 },
               },

packages/nx/src/plugins/package-json/create-nodes.ts

@@ -151,7 +151,16 @@ export function buildProjectConfigurationFromPackageJson(
 
   if (siblingProjectJson) {
     for (const target of Object.keys(siblingProjectJson?.targets ?? {})) {
-      delete packageJson.scripts?.[target];
+      const { executor, command, options } = siblingProjectJson.targets[target];
+      if (
+        // will use run-commands, different target
+        command ||
+        // Either uses a different executor or runs a different script
+        (executor &&
+          (executor !== 'nx:run-script' || options?.script !== target))
+      ) {
+        delete packageJson.scripts?.[target];
+      }
     }
   }