Built in skip properties [skipAddThirdParty and skipDownloadLicenses] of the **license-maven-plugin** are generating missmatch in the effective pom

### Affected version

1.2.1

### Bug description

Built in skip properties [skipAddThirdParty and skipDownloadLicenses] of the **license-maven-plugin** are generating mismatch in the effective pom which is triggering module rebuild, even if reconciliation is configured to ignore these flags only when set to true.

See relevant part of the xml samples.

buildinfo-baseline:


third-party-license-info:add-third-party:initialize:license-maven-plugin:org.codehaus.mojo
org.codehaus.mojo.license.AddThirdPartyMojo

true
null
...
**false**
true
THIRD-PARTY.txt
false
true
false

...

third-party-license-info:download-licenses:initialize:license-maven-plugin:org.codehaus.mojo
org.codehaus.mojo.license.DownloadLicensesMojo

...
**false**
5000
true
false
false
false
false
true

buildinfo:

third-party-license-info:add-third-party:initialize:license-maven-plugin:org.codehaus.mojo
org.codehaus.mojo.license.AddThirdPartyMojo

true
null
...
**true**
true
THIRD-PARTY.txt
false
true
false

...

third-party-license-info:download-licenses:initialize:license-maven-plugin:org.codehaus.mojo
org.codehaus.mojo.license.DownloadLicensesMojo

...
**true**
5000
true
false
false
false
false
true

And the effective pom generated:
effective-pom-baseline:

org.codehaus.mojo
license-maven-plugin
2.4.0


third-party-license-info
initialize

add-third-party
download-licenses


**false**
**false**
warn
...

effective-pom:

org.codehaus.mojo
license-maven-plugin
2.4.0


third-party-license-info
initialize

add-third-party
download-licenses


**true**
**true**
warn
...

Start by reproducing the mismatch using the reported license-maven-plugin configuration and compare the buildinfo-baseline, buildinfo, effective-pom-baseline, and effective-pom samples. Trace how skipAddThirdParty and skipDownloadLicenses are reconciled, and consider the issue resolved when ignored true values no longer cause a module rebuild or effective-POM mismatch.

Written by the indexing model from the issue text.