chore(dashboard): update TiDB Dashboard to v8.3.0-e6e78c7c [master]

[baurine]

What problem does this PR solve?

Issue Number: ref #4257

Update TiDB Dashboard to v8.3.0-e6e78c7c.

Release note

None

Test

$ make pd-server
$ cp bin/pd-server ~/.tiup/components/pd/v8.2.0-alpha-nightly/pd-server

# pd ms mode
$ tiup playground nightly --pd.mode ms --pd.api 1 --pd.scheduling 1 --pd.tso 1 --pd.rm 0 --kv 3 --tiflash 0 --db 1

# pd non-ms mode
$ tiup playground nightly --tiflash 0

[ti-chi-bot]

Hi @baurine. Thanks for your PR.

I'm waiting for a tikv member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

Once the patch is verified, the new status will be reflected by the ok-to-test label.

I understand the commands that are listed here.

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.

[rleungx]

/ok-to-test

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 77.35%. Comparing base (c65577c) to head (fdb7138).

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #8420      +/-   ##
==========================================
+ Coverage   77.28%   77.35%   +0.07%     
==========================================
  Files         471      471              
  Lines       61878    61878              
==========================================
+ Hits        47823    47868      +45     
+ Misses      10470    10425      -45     
  Partials     3585     3585              

Flag	Coverage Δ
unittests	77.35% <ø> (+0.07%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: HuSharp, rleungx

The full list of commands accepted by this bot can be found here.

The pull request process is described here

Needs approval from an approver in each of these files:

• OWNERS [HuSharp,rleungx]

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment

[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-07-18 09:31:44.141688331 +0000 UTC m=+519126.132629799: ☑️ agreed by rleungx.
• 2024-07-18 10:04:11.926157946 +0000 UTC m=+521073.917099417: ☑️ agreed by HuSharp.