[ecmascript] GlobalVariable check fails, when use async function

[kraussjo]

Affects PMD Version:
6.33.0+
7.0.0

GlobalVariable check fails although value is set correctly, when a "async function" is used and the variable is declarated with var/let.

Code Sample demonstrating the issue:

Error is shown (GlobalVariable: Avoid using global variables):

async function getFilter(argDimensionId, argParentValue) {
    
    let params = {};
    params['dimensionId'] = argDimensionId;
    if (argParentValue !== undefined) {
        params['parentCode'] = argParentValue;
    }  

....

}

No error is shown:

function getFilter(argDimensionId, argParentValue) {
    
    let params = {};
    params['dimensionId'] = argDimensionId;
    if (argParentValue !== undefined) {
        params['parentCode'] = argParentValue;
    }  

...

}