MM-52805 - Calls: Add calls ringing & settings panel option (#23444)

* add calls sounds; add calls options to settings panel

* i18n

* fix types; tests

* tests

* expose notificationSounds to plugins

* fix bad version reference

* the real fix

* turn off any currentRing if new ring is requested

* refactor isCallsEnabled into a selector

* fix version fallback

* remove unused vars

* merge conflicts

* stop notification rings on exits

---------

Co-authored-by: Mattermost Build <build@mattermost.com>

webapp/channels/src/components/integrations/installed_outgoing_webhooks/__snapshots__/installed_outgoing_webhooks.test.tsx.snap

@@ -41,6 +41,7 @@ exports[`components/integrations/InstalledOutgoingWebhooks should match snapshot
         "mfa_active": false,
         "nickname": "",
         "notify_props": Object {
+          "calls_desktop_sound": "true",
           "channel": "false",
           "comments": "never",
           "desktop": "default",
@@ -147,6 +148,7 @@ exports[`components/integrations/InstalledOutgoingWebhooks should match snapshot
         "mfa_active": false,
         "nickname": "",
         "notify_props": Object {
+          "calls_desktop_sound": "true",
           "channel": "false",
           "comments": "never",
           "desktop": "default",