Wifi Sharing page uses a new enum for telemetry.

* Previous ID was shared by several pages.
* New ID is only used by this page.

Bug: b/349226088
Settings Intake: b/329012096

Test: atest WifiDppQrCodeGeneratorFragmentTest
Flag: com.android.settings.flags.enable_wifi_sharing_runtime_fragment

Change-Id: I22c8f3a216cf348460a645561be48b23a4bf0e7e