chore(explore): change dnd placeholders

[kgabryje]

SUMMARY

Add "here" suffix to drag and drop controls placeholders.

BEFORE/AFTER SCREENSHOTS OR ANIMATED GIF

Before:

After:

TESTING INSTRUCTIONS

Enable dnd and verify that all controls placeholders have "here" suffix

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

CC @junlincc @srinify

[junlincc]

LGTM, since it's only changing the placeholder, nothing technical. approving.

[codecov]

Codecov Report

Merging #16116 (d7b176d) into master (b80f018) will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master   #16116   +/-   ##
=======================================
  Coverage   76.84%   76.85%           
=======================================
  Files         995      995           
  Lines       52886    52887    +1     
  Branches     6721     6722    +1     
=======================================
+ Hits        40640    40644    +4     
+ Misses      12021    12018    -3     
  Partials      225      225           

Flag	Coverage Δ
javascript	71.23% <100.00%> (+0.01%)	⬆️

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

Impacted Files	Coverage Δ
...ontrols/DndColumnSelectControl/DndColumnSelect.tsx	47.36% <ø> (+0.93%)	⬆️
...ontrols/DndColumnSelectControl/DndFilterSelect.tsx	45.07% <ø> (ø)
...ontrols/DndColumnSelectControl/DndMetricSelect.tsx	42.06% <ø> (ø)
...controls/DndColumnSelectControl/DndSelectLabel.tsx	85.00% <100.00%> (ø)
...ols/DndColumnSelectControl/utils/optionSelector.ts	46.15% <0.00%> (+11.53%)	⬆️

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[rosemarie-chiu]

🏷 2021.31