Configure t-p2-plugin:baselineReplace with property to enable overrides

This simplifies overrides by CLI arguments when necessary, e.g. with
-Dtycho.baseline.replace=none

eclipse-platform-parent/pom.xml

@@ -142,6 +142,7 @@
     <tycho.useJDK>BREE</tycho.useJDK>
 
     <compare-version-with-baselines.skip>true</compare-version-with-baselines.skip>
+    <tycho.baseline.replace>all</tycho.baseline.replace>
     <previous-release.baseline>https://download.eclipse.org/eclipse/updates/4.30/R-4.30-202312010110/</previous-release.baseline>
 
     <!--
@@ -567,7 +568,6 @@
           <version>${tycho.version}</version>
           <configuration>
             <baselineMode>warn</baselineMode>
-            <baselineReplace>all</baselineReplace>
             <baselineRepositories>
               <repository>
                 <url>${comparator.repo}</url>