refactor: convert src/index.js and src/epics/trackerCapture.epics.js from Flow to TypeScript (#4360)

* refactor: convert src/index.js and src/epics/trackerCapture.epics.js from Flow to TypeScript

- Convert src/index.js to src/index.tsx with TypeScript syntax
- Convert src/epics/trackerCapture.epics.js to src/epics/trackerCapture.epics.ts with TypeScript syntax
- Remove Flow annotations and keep all existing imports and structure
- Use type assertion for combineEpics to handle mixed action payload types
- Remove original .js files after conversion
- Verify TypeScript compilation and linting pass

Co-Authored-By: [email protected] <[email protected]>

* refactor: remove original Flow files after TypeScript conversion

- Remove src/index.js (converted to src/index.tsx)
- Remove src/epics/trackerCapture.epics.js (converted to src/epics/trackerCapture.epics.ts)
- Complete the Flow to TypeScript migration for these files

Co-Authored-By: [email protected] <[email protected]>

* fix: update entrypoint in d2.config.js to point to TypeScript file

- Change entrypoint from './src/index' to './src/index.tsx'
- Resolves build failure: 'Could not resolve entrypoint ./src/index'
- Build system now correctly finds the converted TypeScript entry file

Co-Authored-By: [email protected] <[email protected]>

---------

Co-authored-by: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
Co-authored-by: [email protected] <[email protected]>

Author: devin-ai-integration[bot]

d2.config.js

@@ -8,7 +8,7 @@ const config = {
     coreApp: true,
 
     entryPoints: {
-        app: './src/index',
+        app: './src/index.tsx',
     },
 };
 

src/epics/trackerCapture.epics.js src/epics/trackerCapture.epics.tssrc/epics/trackerCapture.epics.js renamed to src/epics/trackerCapture.epics.ts

@@ -1,4 +1,3 @@
-// @flow
 import { combineEpics } from 'redux-observable';
 import {
     cancelNewEventEpic,
@@ -235,7 +234,7 @@ import {
     openRelationshipTeiRegisterWidgetEpic,
 } from '../core_modules/capture-core/components/Pages/common/TEIRelationshipsWidget/TrackedEntityRelationshipsWrapper';
 
-export const epics = combineEpics(
+export const epics = (combineEpics as any)(
     resetProgramAfterSettingOrgUnitIfApplicableEpic,
     calculateSelectionsCompletenessEpic,
     triggerLoadCoreEpic,

src/index.js src/index.tsxsrc/index.js renamed to src/index.tsx

@@ -1,8 +1,6 @@
-// @flow
 import React from 'react';
 import 'capture-core-utils/extensions/asyncForEachArray';
 import 'capture-core-utils/extensions/arrayToHashMap';
-// $FlowFixMe
 import './locales'; //eslint-disable-line
 import { AppStart } from './components/AppStart';