Remove redundant isPrimaryBuildFile check from UpgradeTransitiveDependencyVersion

Applied scripts like dependencies.gradle already don't get constraints
added due to the DEPENDENCIES_DSL_MATCHER not matching non-type-attributed
method invocations in applied scripts. The isPrimaryBuildFile guard was
redundant.

The actual fix is the DependencyConstraintToRule isEmptyDependenciesBlock
change (from the previous commit) which properly cleans up empty
dependencies {} blocks after constraints are converted to resolutionStrategy.

Author: Jenson3210

rewrite-gradle/src/main/java/org/openrewrite/gradle/UpgradeTransitiveDependencyVersion.java

@@ -520,10 +520,7 @@ private class UpdateGradle extends JavaVisitor<ExecutionContext> {
             if (tree instanceof JavaSourceFile) {
                 JavaSourceFile cu = (JavaSourceFile) tree;
                 GradleProject gradleProject = cu.getMarkers().findFirst(GradleProject.class).orElse(null);
-                // Only add constraints to primary build files, not to applied scripts like dependencies.gradle
-                String fileName = cu.getSourcePath().getFileName().toString();
-                boolean isPrimaryBuildFile = "build.gradle".equals(fileName) || "build.gradle.kts".equals(fileName);
-                Map<GroupArtifact, Map<GradleDependencyConfiguration, String>> projectRequiredUpdates = gradleProject != null && isPrimaryBuildFile ? acc.updatesPerProject.getOrDefault(getGradleProjectKey(gradleProject), emptyMap()) : emptyMap();
+                Map<GroupArtifact, Map<GradleDependencyConfiguration, String>> projectRequiredUpdates = gradleProject != null ? acc.updatesPerProject.getOrDefault(getGradleProjectKey(gradleProject), emptyMap()) : emptyMap();
                 if (projectRequiredUpdates.keySet().stream().anyMatch(ga -> dependencyMatcher.matches(ga.getGroupId(), ga.getArtifactId()))) {
                     cu = (JavaSourceFile) Preconditions.check(
                             not(new JavaIsoVisitor<ExecutionContext>() {