fix: prevent duplicate isReleaseInstalled checks in DetectReleasesToBeDeletedForSync

When a release with 'installed: false' appears multiple times in the release list
(due to duplicate entries or being included via needs), the isReleaseInstalled
function was being called multiple times for the same release, resulting in
duplicate 'Listing releases' log messages.

This fix adds a deduplication check using a 'checked' map to ensure each release
is only checked once, preventing duplicate helm list calls and log messages.

This fixes the diff-args integration test where 'Listing releases matching
^uninstalled$' appeared twice in stderr output.

Signed-off-by: yxxhero <aiopsclub@163.com>

pkg/state/state.go

@@ -850,10 +850,18 @@ func (st *HelmState) isReleaseInstalled(context helmexec.HelmContext, helm helme
 
 func (st *HelmState) DetectReleasesToBeDeletedForSync(helm helmexec.Interface, releases []ReleaseSpec) ([]ReleaseSpec, error) {
 	deleted := []ReleaseSpec{}
+	checked := make(map[string]bool)
+
 	for i := range releases {
 		release := releases[i]
 
 		if !release.Desired() {
+			id := ReleaseToID(&release)
+			if checked[id] {
+				continue
+			}
+			checked[id] = true
+
 			installed, err := st.isReleaseInstalled(st.createHelmContext(&release, 0), helm, release)
 			if err != nil {
 				return nil, err

test/integration/test-cases/diff-args/output/diff-live-stderr

@@ -1,4 +1,3 @@
 Live output is enabled
 Building dependency release=installed, chart=../../../charts/httpbin
-Listing releases matching ^uninstalled$ 
-Listing releases matching ^uninstalled$ 
+Listing releases matching ^uninstalled$