[BUG] openapiGeneratorIgnoreList

[michael-upton97]

-#### Bug Report Checklist

• Have you provided a full/minimal spec to reproduce the issue?
• I did not provide a spec as the code generation is successful, but the ignoring functionality is not.
• Have you validated the input using an OpenAPI validator (example)?
• Have you tested with the latest master to confirm the issue still exists?
• Have you searched for related issues/PRs?
• What's the actual output vs expected output?
• [Optional] Sponsorship to speed up the bug fix or feature request (example)

Description

openapi-generator version

org.openapitools:openapi-generator-gradle-plugin:7.9.0

Generation Details

openapiGeneratorIgnoreList = ["README.md"]

inputSpec = MY_INPUT_DIR
outputDir = MY_OUTPUT_DIR
invokerPackage = MY_PACKAGE
apiPackage = MY_PACKAGE.api
modelPackage = MY_PACKAGE.model

generatorName = "java"
configOptions = [
sourceFolder : "src/main",
library : "resttemplate",
openApiNullable : "false",
performBeanValidation : "true",
useBeanValidation : "true",
generateConstructorWithAllArgs: "true"
]
typeMappings = [
number : "Long"
]
importMappings = [
Long : "java.lang.Long"
]

Steps to reproduce

https://github.com/openapitools/openapi-generator/blob/master/docs/customization.md#ignore-file-format:~:text=openapiGeneatorIgnoreList

I can't get the described functionality above to work for me during code generation.
No matter how I configure openapiGeneratorIgnoreList, the logic does not prevent generation of the given files, or even update the .openapi-generator-ignore file. Please note I have been able to recreate this behavior in two projects, and with version 7.9.0 and 7.2.0 (immediately after this feature was introduced).
I have attempted the following
openapiGeneratorIgnoreList = ["README.md"]
openapiGeneratorIgnoreList = ["README.md".toString()]
openapiGeneratorIgnoreList = ["/README.md"]
openapiGeneratorIgnoreList = ["/README.md".toString()]
openapiGeneratorIgnoreList = ["/README.md"]
openapiGeneratorIgnoreList = ["/README.md".toString()]
openapiGeneratorIgnoreList = ["**"]

Additionally the documentation seems to have a typo in it, and suggests a spelling of "openapiGeneatorIgnoreList" which is not recognized by IntelliJ, nor can I see it in the source code

Related issues/PRs

#15047
#17889

Suggest a fix

I cannot determine why this is not working in the source code. Perhaps someone could try and recreate it.