@GrailsCompileStatic(TypeCheckingMode.SKIP) is generating an Index 0 out of bounds for length 0 error

### Expected Behavior

My application was using Grails _5.1.2_ and I decided to update to Grails _5.1.4_ today.
The project is getting some errors related to **@GrailsCompileStatic(TypeCheckingMode.SKIP)**. On the previous version (_5.1.2_) was working as expected. I use this annotation on Controllers, Services and Domains.

this is the error **Index 0 out of bounds for length 0**

Any idea?

### Actual Behaviour

* What went wrong:
Execution failed for task ':compileGroovy'.
> BUG! exception in phase 'semantic analysis' in source unit '/Users/adrian/Sites/hulimotors/myapp/grails-app/controllers/myapp/RestaurantController.groovy' Index 0 out of bounds for length 0


### Steps To Reproduce

1. curl -O https://start.grails.org/myapp.zip -d profile=rest-api -d features=events,mongodb,security
2. cd myapp
3. grails create-domain-class Restaurant
4. grails generate-all myapp.Restaurant
5. Add new action method on the Controller


6. Add @GrailsCompileStatic to the Controller


.

### Environment Information

macOS Monterey
version 12.3

openjdk version "11.0.14" 2022-01-18
OpenJDK Runtime Environment Temurin-11.0.14+9 (build 11.0.14+9)
OpenJDK 64-Bit Server VM Temurin-11.0.14+9 (build 11.0.14+9, mixed mode)

### Example Application

_No response_

### Version

5.1.4

Start by reproducing the reported failure in myapp/grails-app/controllers/myapp/RestaurantController.groovy using the listed Grails 5.1.4 setup and @GrailsCompileStatic(TypeCheckingMode.SKIP). Compare compilation with Grails 5.1.2, focusing on the :compileGroovy semantic-analysis error. Done means the reproduction project compiles successfully with the annotation in place.

Written by the indexing model from the issue text.