Create the target application context for the calling user.

When creating a target context to launch manageSpaceActivity, we need
to use the package installed on the calling user. It should not be
expected that a target application is installed for the system user.

Bug: 350565912
Flag: EXEMPT bugfix
Test: atest CtsOsTestCases:StorageManagerTest#testGetManageSpaceActivityIntent
Test: atest --user-type secondary_user CtsOsTestCases:StorageManagerTest#testGetManageSpaceActivityIntent
Test: atest --user-type secondary_user_on_secondary_display CtsOsTestCases:StorageManagerTest#testGetManageSpaceActivityIntent
Test: atest StorageManagerServiceTest
(cherry picked from https://partner-android-review.googlesource.com/q/commit:bb0ac781c0bf986c07d5e410869995fae2b29ac7)

Change-Id: I765bf996bcb2e2b6143412d9247663d7582614c7