[Telemetry Audit] Move library downloads panel probes to the library.downloads_panel.yaml file

[data-sync-user]

The Task

This task is to move library history panel probes out of the monolithic metrics.yaml file and into the library.downloads_panel.yaml file with a Library tag and DownloadsPanel tag.

You can look up these probes in the Glean dictionary as well: https://dictionary.telemetry.mozilla.org/apps/firefox_ios

Probes to Move

• downloads.downloads_panel_row_tapped

Note: The Library and DownloadsPanel tags will be automatically applied at the top of the library.downloads_panel.yaml file. So if these tags are added in the metadata section of any probe, you can remove them.

Example

You can see an example of this type of work in the following PR: https://github.com/mozilla-mobile/firefox-ios/pull/27083

:information_source: Reference Person

@ih-codes

┆Issue is synchronized with this Jira Task