fix: Side menu of the dashboard component will scroll out of dashboard

[michael-s-molina]

SUMMARY

Fixes #15862

@junlincc @jinghua-qa

AFTER SCREENSHOTS OR ANIMATED GIF

screen-recording-2021-07-25-at-105703-am_GVOlMnDd.mp4

TESTING INSTRUCTIONS

See the original issue for instructions.

ADDITIONAL INFORMATION

• Has associated issue:
• Changes UI
• Includes DB Migration (follow approval process in SIP-59)
  • Migration is atomic, supports rollback & is backwards-compatible
  • Confirm DB migration upgrade and downgrade tested
  • Runtime estimates and downtime expectations provided
• Introduces new feature or API
• Removes existing feature or API

[codecov]

Codecov Report

Merging #15888 (d55a926) into master (7330aef) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master   #15888   +/-   ##
=======================================
  Coverage   77.08%   77.08%           
=======================================
  Files         984      984           
  Lines       51787    51787           
  Branches     7036     7036           
=======================================
  Hits        39920    39920           
  Misses      11642    11642           
  Partials      225      225           

Flag	Coverage Δ
javascript	71.73% <ø> (ø)

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

Impacted Files	Coverage Δ
...d/components/DashboardBuilder/DashboardBuilder.tsx	90.38% <ø> (ø)

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[rusackas]

We should probably start a z-index registry somewhere. The comment is appreciated in the meantime.

[rusackas]

/testenv up

[github-actions]

@rusackas Ephemeral environment spinning up at http://34.221.12.115:8080. Credentials are admin/admin. Please allow several minutes for bootstrapping and startup.

[github-actions]

Ephemeral environment shutdown and build artifacts deleted.