Add app.in_foreground to frontend-search files (#44157)

static/app/utils/fields/index.ts

@@ -108,6 +108,7 @@ export enum FieldKey {
   USER_ID = 'user.id',
   USER_IP = 'user.ip',
   USER_USERNAME = 'user.username',
+  APP_IN_FOREGROUND = 'app.in_foreground',
 }
 
 export enum FieldValueType {
@@ -926,6 +927,11 @@ const EVENT_FIELD_DEFINITIONS: Record<AllEventFieldKeys, FieldDefinition> = {
     kind: FieldKind.FIELD,
     valueType: FieldValueType.STRING,
   },
+  [FieldKey.APP_IN_FOREGROUND]: {
+    desc: t('Indicates if the app is in the foreground or background'),
+    kind: FieldKind.FIELD,
+    valueType: FieldValueType.BOOLEAN,
+  },
 };
 
 export const ISSUE_FIELDS = [
@@ -991,6 +997,7 @@ export const ISSUE_FIELDS = [
   FieldKey.USER_ID,
   FieldKey.USER_IP,
   FieldKey.USER_USERNAME,
+  FieldKey.APP_IN_FOREGROUND,
 ];
 
 /**
@@ -1067,6 +1074,9 @@ export const DISCOVER_FIELDS = [
   FieldKey.STACK_STACK_LEVEL,
   // contexts.key and contexts.value omitted on purpose.
 
+  // App context fields
+  FieldKey.APP_IN_FOREGROUND,
+
   // Transaction event fields.
   FieldKey.TRANSACTION_DURATION,
   FieldKey.TRANSACTION_OP,