fix(pkg): add nil-checks

Signed-off-by: Julian Siebert <j.siebert@micromata.de>

internal/chart/v3/util/dependencies.go

@@ -223,11 +223,14 @@ Loop:
 		// win on conflicts.
 		if path != "" {
 			if pt, err := cvals.Table(strings.TrimSuffix(path, ".")); err == nil {
-				if top, ok := cvals[t.Metadata.Name].(map[string]interface{}); ok {
+				if top, ok := cvals[t.Metadata.Name].(map[string]any); ok {
 					if v, ok := pt[t.Metadata.Name]; ok && !istable(v) {
 						slog.Warn("skipping nested path update: value is not a table", "path", path+t.Metadata.Name)
 					} else {
-						nested, _ := v.(map[string]interface{})
+						nested, _ := v.(map[string]any)
+						if nested == nil {
+							nested = map[string]any{}
+						}
 						pt[t.Metadata.Name] = util.CoalesceTables(nested, top)
 					}
 				}

pkg/chart/v2/util/dependencies.go

@@ -228,6 +228,9 @@ Loop:
 						slog.Warn("skipping nested path update: value is not a table", "path", path+t.Metadata.Name)
 					} else {
 						nested, _ := v.(map[string]any)
+						if nested == nil {
+							nested = map[string]any{}
+						}
 						pt[t.Metadata.Name] = util.CoalesceTables(nested, top)
 					}
 				}

pkg/chart/v2/util/dependencies_test.go

@@ -175,12 +175,12 @@ func TestDependencyEnabledAliasNestedConditionEnabled(t *testing.T) {
 	// User-provided values override util.enabled=true via the full alias path.
 	// Expected: util IS included in the output.
 	c := loadChart(t, "testdata/alias-condition-nested")
-	vals := map[string]interface{}{
-		"midchart": map[string]interface{}{
+	vals := map[string]any{
+		"midchart": map[string]any{
 			"enabled": true,
-			"leafchart": map[string]interface{}{
+			"leafchart": map[string]any{
 				"enabled": true,
-				"util": map[string]interface{}{
+				"util": map[string]any{
 					"enabled": true,
 				},
 			},