[PM] Don't return the trimmed label

Don't return the trimmed label. If the label is visible to the user,
return the original label.

Flag: android.content.pm.lightweight_invisible_label_detection
Bug: 361029358
Test: atest CtsPackageManagerTestCases:LauncherAppsTest
Test: atest LauncherActivityInfoTest
Change-Id: Ic9ed9a21a2e6c8b50f160ba17e5a58f082a91fc0