feat: persist AI task state in template imports & workspace builds (#18449)

coderd/wsbuilder/wsbuilder.go

@@ -426,12 +426,6 @@ func (b *Builder) buildTx(authFunc func(action policy.Action, object rbac.Object
 				UUID:  b.templateVersionPresetID,
 				Valid: b.templateVersionPresetID != uuid.Nil,
 			},
-			// appease the exhaustruct linter
-			// TODO: set this to whether the build included a `coder_ai_task` tf resource
-			HasAITask: sql.NullBool{
-				Bool:  false,
-				Valid: false,
-			},
 		})
 		if err != nil {
 			code := http.StatusInternalServerError