Revert^2 [Screen share] Update strings and icon for share-to-app dialog.

Bug: 352327853
Flag: NONE string changes
Test: Share screen to app -> verify dialog has new strings and icon for
both single app case and entire screen cast
Test: atest ShareToAppPermissionDialogDelegateTest
Reason for revert: Topic now includes CTS test fix

Reverted changes: /q/submissionid:28642892-revert-28431498-caitlinshk-share-to-app-dialog-strings-UYTOPKHRYZ

Change-Id: Ibe833dbb667bcddac24d5a244f6e9d1ac01f424d