Schema: Change how origin filters are added to AdHocVariable (#106086)

* refactor origin filters schema

* add canary version

* update schema

* fix failing tests

* refactor

* remove autogenerated import

* tests

* maintain only dashboard originated filters

* refactor

* refactor

* Schema: Persist defaultValue for groupBy in schema (#106542)

* persist defaultValue for groupBy in schema

* fix

* type

* refactor

* refactor

* bump scenes

apps/dashboard/kinds/v2alpha1/dashboard_spec.cue

@@ -692,8 +692,7 @@ VariableRefresh: *"never" | "onDashboardLoad" | "onTimeRangeChanged"
 VariableHide: *"dontHide" | "hideLabel" | "hideVariable"
 
 // Determine the origin of the adhoc variable filter
-// Accepted values are `dashboard` (filter originated from dashboard), or `scope` (filter originated from scope).
-FilterOrigin: "dashboard" | "scope"
+FilterOrigin: "dashboard"
 
 // FIXME: should we introduce this? --- Variable value option
 VariableValueOption: {