refactor(trigger): rename trigger references to event for consistency

- Updated variable names and types from 'trigger' to 'event' across multiple files to enhance clarity and maintain consistency in the codebase.
- Adjusted related data structures and API responses to reflect the new naming convention.
- Improved type annotations and error handling in the workflow trigger run API and associated services.

web/app/components/tools/types.ts

@@ -102,7 +102,7 @@ export type TriggerParameter = {
 }
 
 // Action
-export type Trigger = {
+export type Event = {
   name: string
   author: string
   label: TypeWithI18N