fix(sqllab): Table name and schema are encoded twice during fetching table metadata on SQL Lab page.

[didva]

SUMMARY

Table name and schema are encoded twice during fetching table metadata on SQL Lab page.

BEFORE/AFTER SCREENSHOTS OR ANIMATED GIF

TEST PLAN

Tested locally.

closes #13317

ADDITIONAL INFORMATION

• Has associated
• Changes UI

[codecov]

Codecov Report

Merging #13636 (32254b0) into master (cd2f53e) will decrease coverage by 3.75%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master   #13636      +/-   ##
==========================================
- Coverage   76.78%   73.02%   -3.76%     
==========================================
  Files         918      608     -310     
  Lines       46641    21638   -25003     
  Branches     5635     5723      +88     
==========================================
- Hits        35812    15801   -20011     
+ Misses      10684     5701    -4983     
+ Partials      145      136       -9     

Flag	Coverage Δ
cypress	56.58% <ø> (+2.71%)	⬆️
hive	?
javascript	63.05% <100.00%> (+<0.01%)	⬆️
mysql	?
postgres	?
presto	?
python	?
sqlite	?

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

Impacted Files	Coverage Δ
superset-frontend/src/SqlLab/actions/sqlLab.js	63.03% <ø> (+0.20%)	⬆️
...-frontend/src/explore/components/controls/index.js	100.00% <ø> (ø)
...perset-frontend/src/explore/components/Control.tsx	95.45% <100.00%> (+0.21%)	⬆️
...uperset/utils/dashboard_filter_scopes_converter.py
superset/examples/deck.py
superset/dashboards/api.py
superset/datasets/metrics/commands/delete.py
superset/legacy.py
superset/utils/hashing.py
superset/dashboards/dao.py
... and 345 more

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[betodealmeida]

Thanks for fixing this!