Enable parallel Gradle configuration by removing evaluationDependsOn

The build had evaluationDependsOn() calls that forced sequential configuration:
- otel.java-conventions applied to ~400 projects, each waiting on :dependencyManagement
- otel.bom-conventions looping through all subprojects
- otel.javaagent-testing waiting on :testing:agent-for-testing

Changes:
- Removed evaluationDependsOn from convention plugins (otel.java-conventions, otel.bom-conventions, otel.javaagent-testing)
- Kept evaluationDependsOn only in 2 BOM build.gradle.kts files where directly needed
- Added explicit platform dependencies to ensure proper evaluation order

Result: Projects can now configure in parallel instead of sequentially queuing behind dependencyManagement, significantly improving configuration time.

Author: trask

bom-alpha/build.gradle.kts

@@ -10,6 +10,9 @@ javaPlatform {
   allowDependencies()
 }
 
+// Need this since we access :dependencyManagement configurations below
+evaluationDependsOn(":dependencyManagement")
+
 dependencies {
   api(platform("io.opentelemetry:opentelemetry-bom"))
   api(platform("io.opentelemetry:opentelemetry-bom-alpha"))

bom/build.gradle.kts

@@ -10,6 +10,9 @@ javaPlatform {
   allowDependencies()
 }
 
+// Need this since we access :dependencyManagement configurations below
+evaluationDependsOn(":dependencyManagement")
+
 dependencies {
   api(platform("io.opentelemetry:opentelemetry-bom"))
 

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

@@ -9,11 +9,6 @@ if (!project.name.startsWith("bom")) {
   throw IllegalStateException("Name of BOM projects must start with 'bom'.")
 }
 
-rootProject.subprojects.forEach { subproject ->
-  if (!subproject.name.startsWith("bom")) {
-    evaluationDependsOn(subproject.path)
-  }
-}
 val otelBom = extensions.create<OtelBomExtension>("otelBom")
 
 afterEvaluate {
@@ -41,7 +36,6 @@ afterEvaluate {
 }
 
 // this applies version numbers to the SDK bom and SDK alpha bom which are dependencies of the instrumentation boms
-evaluationDependsOn(":dependencyManagement")
 val dependencyManagementConf = configurations.create("dependencyManagement") {
   isCanBeConsumed = false
   isCanBeResolved = false

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

@@ -121,7 +121,6 @@ afterEvaluate {
   }
 }
 
-evaluationDependsOn(":dependencyManagement")
 val dependencyManagementConf = configurations.create("dependencyManagement") {
   isCanBeConsumed = false
   isCanBeResolved = false

conventions/src/main/kotlin/otel.javaagent-testing.gradle.kts

@@ -4,8 +4,6 @@ plugins {
   id("otel.java-conventions")
 }
 
-evaluationDependsOn(":testing:agent-for-testing")
-
 dependencies {
   annotationProcessor("com.google.auto.service:auto-service")
   compileOnly("com.google.auto.service:auto-service")