Command line option --inplace does not work

### Steps to Reproduce

```console
$ grails -V
Grails Version: 6.1.2
JVM Version: 11.0.16
```
```console
$ mkdir myapp
$ cd myapp
$ grails create-app --inplace
Specify an application name or use --inplace to create an application in the current directory
Usage: grails create-app [-hivVx] [--list-features] [-g=GORM Implementation] [--jdk=]
[-s=Servlet Implementation] [-t=TEST] [-f=FEATURE[,FEATURE...]]... [NAME]
Creates an application
[NAME] The name of the application to create.
-f, --features=FEATURE[,FEATURE...]
The features to use. Possible values: asciidoctor, mockito, assertj,
testcontainers, spring-boot-starter-tomcat, cache-ehcache,
gorm-hibernate5, scaffolding, database-migration, mysql, cache, h2,
grails-gsp, spring-boot-devtools, grails-console, mongo-sync,
logbackGroovy, gorm-neo4j, micronaut-http-client,
spring-boot-starter-jetty, sqlserver, hamcrest, jrebel, embedded-mongodb,
asset-pipeline-grails, spring-boot-starter-undertow, views-markup,
micronaut-inject-groovy, gorm-mongodb, hibernate-validator, postgres,
grails-web-console, views-json, github-workflow-java-ci, shade, geb,
properties
-g, --gorm=GORM Implementation
Which GORM Implementation to configure. Possible values: hibernate,
mongodb, neo4j.
-h, --help Show this help message and exit.
-i, --inplace Create a service using the current directory
--jdk, --java-version=
The JDK version the project should target
--list-features Output the available features and their descriptions
-s, --servlet=Servlet Implementation
Which Servlet Implementation to configure. Possible values: none, tomcat,
jetty, undertow.
-t, --test=TEST Which test framework to use. Possible values: junit, spock.
-v, --verbose Create verbose output.
-V, --version Print version information and exit.
-x, --stacktrace Show full stack trace when exceptions occur.
```

### Expected Behaviour

An application to be created in the `myapp` directory.

### Actual Behaviour

The above info message is shown.

### Environment Information

- **Operating System**: Linux
- **Grails Version:** 6.1.2
- **JDK Version:** 11

Reproduce `grails create-app --inplace` in an empty `myapp` directory using Grails 6.1.2 on JDK 11, then trace the create-app command's option handling. Done means the command creates an application in the current directory instead of showing the informational message.

Written by the indexing model from the issue text.