[Explore] Enable Rich tooltip by default

[graceguo-supercat]

per our data scientist requested, want to enable chart's rich tooltip by default.

@mistercrunch @timifasubaa @michellethomas

[codecov-io]

Codecov Report

Merging #5215 into master will decrease coverage by 14.01%.
The diff coverage is n/a.

@@             Coverage Diff             @@
##           master    #5215       +/-   ##
===========================================
- Coverage   77.48%   63.46%   -14.02%     
===========================================
  Files          44      261      +217     
  Lines        8749    19849    +11100     
  Branches        0     1998     +1998     
===========================================
+ Hits         6779    12597     +5818     
- Misses       1970     7243     +5273     
- Partials        0        9        +9

Impacted Files	Coverage Δ
superset/assets/src/explore/controls.jsx	44.44% <ø> (ø)
superset/assets/src/visualizations/horizon.js	5.04% <0%> (ø)
...src/explore/components/controls/VizTypeControl.jsx	89.58% <0%> (ø)
...et/assets/src/visualizations/deckgl/layers/hex.jsx	38.46% <0%> (ø)
superset/assets/src/components/PopoverSection.jsx	100% <0%> (ø)
...rset/assets/src/profile/components/TableLoader.jsx	64.7% <0%> (ø)
superset/assets/src/components/FaveStar.jsx	68.75% <0%> (ø)
...ts/src/explore/components/controls/TextControl.jsx	45.45% <0%> (ø)
superset/assets/src/visualizations/world_map.js	21.87% <0%> (ø)
superset/assets/src/modules/AnnotationTypes.js	64% <0%> (ø)
... and 208 more

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[hughhhh]

🚢