bug(pom): wrong inheritance of version and scope from root DepManagement in parent dependencies

[DmitriyLewen]

Description

We need to correctly inherit some fields from the root DepManagement in parent dependencies:

• always use version from root DepManagement and don't use properties from parent.
• overwrite scope only if parent dependency doesn't use scope

Example:
root pom:

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <parent>
        <groupId>org.example</groupId>
        <artifactId>example-parent</artifactId>
        <version>4.0.0</version>
        <relativePath>./parent/pom.xml</relativePath>
    </parent>

    <groupId>com.example</groupId>
    <artifactId>child-depManagement-in-parent</artifactId>
    <version>1.0.0</version>


    <properties>
        <api.version>1.0.1</api.version>
        <api2.version>1.0.2</api2.version>
    </properties>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.example</groupId>
                <artifactId>example-api</artifactId>
                <version>${api.version}</version>
                <scope>runtime</scope>
            </dependency>
            <dependency>
                <groupId>org.example</groupId>
                <artifactId>example-api2</artifactId>
                <version>${api2.version}</version>
                <scope>runtime</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>
</project>

Parent pom:

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">

    <modelVersion>4.0.0</modelVersion>

    <groupId>org.example</groupId>
    <artifactId>example-parent</artifactId>
    <version>4.0.0</version>
    <packaging>pom</packaging>

    <properties>
        <api.version>4.0.1</api.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.example</groupId>
            <artifactId>example-api</artifactId>
            <version>${api.version}</version>
            <scope>compile</scope>
        </dependency>
        <dependency>
            <groupId>org.example</groupId>
            <artifactId>example-api2</artifactId>
        </dependency>
    </dependencies>
</project>

mvn result:

[INFO] com.example:child-depManagement-in-parent:jar:1.0.0
[INFO] +- org.example:example-api:jar:1.0.1:compile
[INFO] \- org.example:example-api2:jar:1.0.2:runtime

Discussed in #7537

[DmitriyLewen]

always use version from root DepManagement and don't use properties from parent.
overwrite scope only if parent dependency doesn't use scope

After investigation I realized that this is incorrect.
For parents we need to inherit DependencyManagement and Properties as non-rootDepManagements.
In this case we will be correctly overwrite empty scopes/version, use properties, etc.