Add logs and prevent collissions when adding items

-AddWorkspaceItemsTask can add multiple items to the same position, we
avoid that here by adding each item to the database before processing
the next item.
-We add more logs to InstallSessionHelper to be able to check who the
installer is

Bug: 432237485, 425754534
Test: AddWorkspaceItemsTaskTest
Flag: EXEMPT bugfix
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:4b439e999734852a017ce662543b4789b36e0e3b)
Merged-In: I2d238f3eb27734ab9cb723e2fe9d6752c5921dd1
Change-Id: I2d238f3eb27734ab9cb723e2fe9d6752c5921dd1

src/com/android/launcher3/pm/InstallSessionHelper.java

@@ -225,8 +225,11 @@ public class InstallSessionHelper {
             // not already present. For general app installations however, we do support it.
             if (!Flags.enableSupportForArchiving() || !sessionInfo.isUnarchival()) {
                 FileLog.d(LOG, "Adding package name to install queue: "
-                        + sessionInfo.getAppPackageName());
-
+                        + sessionInfo.getAppPackageName()
+                        + "Package installer: "
+                        + sessionInfo.getInstallerPackageName()
+                        + "Session id: "
+                        + sessionInfo.getSessionId());
                 ItemInstallQueue.INSTANCE.get(mAppContext)
                         .queueItem(sessionInfo.getAppPackageName(), getUserHandle(sessionInfo));
             }