fix(dashboard): Change text and icons in dashboard editmode

[agl-developer]

SUMMARY

If user wants to add text to the dashboard, they have to go to "layout components" and choose "markdown". This is super not intuitive for users (findings from Sayya), especially as the icon is not related to the text.

• Change 'Markdown' to 'Text' in edit mode sidebar
• Change default text in markdown editor

BEFORE/AFTER SCREENSHOTS OR ANIMATED GIF

Before

After

TESTING INSTRUCTIONS

• Click on Dashboards on the top left menu bar
• Click on '+ Dashboard' on the top right button
• Select 'Layout Elements' from the right sidebar
• Drag 'Text' to the main editor

ADDITIONAL INFORMATION

• Has associated issue:
• Required feature flags:
• 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 #21305 (6a39113) into master (389fa31) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master   #21305   +/-   ##
=======================================
  Coverage   66.82%   66.82%           
=======================================
  Files        1798     1798           
  Lines       68824    68824           
  Branches     7331     7331           
=======================================
  Hits        45994    45994           
  Misses      20952    20952           
  Partials     1878     1878           

Flag	Coverage Δ
javascript	53.15% <100.00%> (ø)

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

Impacted Files	Coverage Δ
...oard/components/gridComponents/new/NewMarkdown.jsx	0.00% <ø> (ø)
...c/dashboard/components/gridComponents/Markdown.jsx	72.36% <100.00%> (ø)

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[geido]

@agl-developer there's a Cypress test that needs fixing. I'll spin up a test env when that is fixed. Thanks!

[codyml]

@agl-developer Looks like another Cypress test is broken.

[geido]

/testenv up

[github-actions]

@geido Ephemeral environment spinning up at http://34.217.85.239:8080. Credentials are admin/admin. Please allow several minutes for bootstrapping and startup.

[github-actions]

Ephemeral environment shutdown and build artifacts deleted.