Site and dependencies in multi module project

[slawekjaranowski]

Affected version

4.x, 3.x

Bug description

When we have a multi module project and we have dependencies between modules

mvn site 

will fail as dependencies are not resolved

adding compile phase resolve a problem, like

mvn compile site 

It can be something special with default and site lifecycles

[Will-thom]

Hi @slawekjaranowski

Fixes #12064

This updates Maven's reactor workspace resolution for site lifecycle builds so reports can resolve reactor JAR dependencies even when the producer module has not been compiled or packaged first.

The change keeps compile/default lifecycle behavior unchanged and adds an integration test covering a multi-module site build where a consumer module depends on a producer module. The test verifies that mvn site succeeds without running compile explicitly and without producing producer/target/classes.

This should be a candidate for backport to maven-3.10.x.