Compilation issues when adding alias list from within an if statement

[hugohills-regnosys]

This compiles and runs successfully:

type Bar:
    foos Foo (0..*)

type Foo:
    attr string (1..1)

func FuncFoo:
    inputs:
        newFoos Foo (0..*)
        test boolean (1..1)
    output:
        bar Bar (1..1)

    add bar -> foos:
        if test
        then newFoos

But this works fails with compilation issues due to error: incompatible types: java.util.List<capture#1 of ? extends com.rosetta.test.model.Foo> cannot be converted to java.util.List<com.rosetta.test.model.Foo>

type Bar:
    foos Foo (0..*)

type Foo:
    attr string (1..1)

func FuncFoo:
    inputs:
        newFoos Foo (0..*)
        test boolean (1..1)
    output:
        bar Bar (1..1)

    alias filteredFoos: newFoos

    add bar -> foos:
        if test
        then filteredFoos

[hugohills-regnosys]

See PR for unit test (without a fix) #842