chore: fix migration

There is a bug where the migration added .abplayers to all ovveride sub-paths, where only the top one is correct

Author: nytamin

meteor/server/migration/1_52_0.ts

@@ -82,6 +82,7 @@ export const addSteps = addMigrationSteps('1.52.0', [
 				// .abPlayers in the overrides:
 				for (const override of studio.routeSetsWithOverrides.overrides) {
 					if (override.op === 'set') {
+						if (override.path.includes('.')) continue // Only include overrides at the top level
 						const value = override.value as StudioRouteSet
 
 						if (!value.abPlayers) {
@@ -113,6 +114,7 @@ export const addSteps = addMigrationSteps('1.52.0', [
 				// .abPlayers in the overrides:
 				for (const override of newRouteSetsWithOverrides.overrides) {
 					if (override.op === 'set') {
+						if (override.path.includes('.')) continue // Only include overrides at the top level
 						const value = override.value as StudioRouteSet
 
 						if (!value.abPlayers) {