[test] Fix time zone sensitive test

[LukasTy]

Try fixing test failing in Edge due to different timezone mentioned here.
Tested locally by setting explicit process TZ of America/Los_Angeles.
Another change that could work and potentially reduce future issues - setting explicit time zone for karma tests.

[mui-bot]

These are the results for the performance tests:

Test case	Unit	Min	Max	Median	Mean	σ
Filter 100k rows	ms	331.1	739.5	502.8	483.54	150.014
Sort 100k rows	ms	468	1,022.4	700.9	821.12	208.713
Select 100k rows	ms	275.2	294.3	291.1	287.24	7.514
Deselect 100k rows	ms	125.1	298.8	189.5	209.86	71.076

Generated by 🚫 dangerJS against 28b8f1a

[m4theushw]

Could you apply the diff below and commit? It will force to run all browsers so we can see if there's no more test failing. Once is green please revert the commit.

diff --git a/.circleci/config.yml b/.circleci/config.yml
index 9607e2d4a..5735a23b8 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -194,6 +194,8 @@ jobs:
       - run:
           name: Tests real browsers
           command: yarn test:karma
+          environment:
+            BROWSERSTACK_FORCE: 'true'
       - store_artifacts:
           # hardcoded in karma-webpack
           path: /tmp/_karma_webpack_