Fix BOM generation with parallel configuration

The BOM convention plugin needs to force evaluation of all non-BOM
subprojects before filtering them by plugin and adding as dependency
constraints. Without this, when parallel configuration is enabled, the
published BOMs have missing or incomplete dependency constraints which
causes resolution failures in downstream builds like examples/distro.

Author: trask

conventions/src/main/kotlin/otel.bom-conventions.gradle.kts

@@ -9,6 +9,14 @@ if (!project.name.startsWith("bom")) {
   throw IllegalStateException("Name of BOM projects must start with 'bom'.")
 }
 
+// Force evaluation of all non-BOM subprojects so that we can filter them by plugin
+// and add them as dependency constraints below
+rootProject.subprojects.forEach { subproject ->
+  if (!subproject.name.startsWith("bom")) {
+    evaluationDependsOn(subproject.path)
+  }
+}
+
 val otelBom = extensions.create<OtelBomExtension>("otelBom")
 
 afterEvaluate {