Fix exports is undefined

[Hailong-am]

Description

Remove babel override for build and keep it for unit test, based on that add a condition in babel.config.js file.

Issues Resolved

related to #741

Check List

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[codecov]

Codecov Report

Merging #826 (73c7b4e) into main (cdb2f21) will decrease coverage by 0.01%.
Report is 2 commits behind head on main.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main     #826      +/-   ##
==========================================
- Coverage   63.37%   63.36%   -0.01%     
==========================================
  Files         341      341              
  Lines       11545    11553       +8     
  Branches     2108     2112       +4     
==========================================
+ Hits         7317     7321       +4     
- Misses       3654     3658       +4     
  Partials      574      574              

see 1 file with indirect coverage changes

[AMoo-Miki]

I don't believe this is the best solution. While it does solve the problem caused by the typeof transformer, the root cause is the inclusion of @osd/std in the bundles.

Doing

import {
  AppMountParameters,
  CoreSetup,
  CoreStart,
-  DEFAULT_APP_CATEGORIES,
  Plugin,
  PluginInitializerContext,
} from "../../../src/core/public";
+import { DEFAULT_APP_CATEGORIES } from "../../../src/core/utils/default_app_categories";

in https://github.com/opensearch-project/index-management-dashboards-plugin/blob/main/public/plugin.ts, avoids bundling all the unnecessary code from @osd/std and ...; I think due to the smaller payload, this is a better solution.

[Hailong-am]

Based on the suggestion of @AMoo-Miki #834 (comment), will remove the babel override of this project babel.config.js for build and use default config from opensearch-dashboard

we still need this file for yarn test:jest, so a condition is added here for unit test.

[AMoo-Miki]

I made a bunch of changes to OSD as well to break the factors that contributed to this problem.