style: fixing tall filter indicators

[rusackas]

Co-Authored-By: Evan Rusackas [email protected]

SUMMARY

Fixes #11626

When we un-truncated chart headers again, this issue crept in. As you can see by the screenshots, it now looks as intended.

BEFORE/AFTER SCREENSHOTS OR ANIMATED GIF

Before:

After:

TEST PLAN

ADDITIONAL INFORMATION

• Has associated issue:
• Changes UI
• Requires DB Migration.
• Confirm DB Migration upgrade and downgrade tested.
• Introduces new feature or API
• Removes existing feature or API

[graceguo-supercat]

LGTM

[codecov-io]

Codecov Report

Merging #11631 (6bf3946) into master (5be1dbe) will decrease coverage by 0.63%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master   #11631      +/-   ##
==========================================
- Coverage   61.92%   61.28%   -0.64%     
==========================================
  Files         422      422              
  Lines       26295    26284      -11     
==========================================
- Hits        16282    16109     -173     
- Misses      10013    10175     +162     

Flag	Coverage Δ
python	61.28% <ø> (-0.64%)	⬇️

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

Impacted Files	Coverage Δ
superset/db_engines/hive.py	0.00% <0.00%> (-85.72%)	⬇️
superset/db_engine_specs/hive.py	53.90% <0.00%> (-30.08%)	⬇️
superset/db_engine_specs/presto.py	69.76% <0.00%> (-12.53%)	⬇️
superset/examples/world_bank.py	97.10% <0.00%> (-2.90%)	⬇️
superset/db_engine_specs/postgres.py	97.56% <0.00%> (-2.44%)	⬇️
superset/examples/birth_names.py	96.51% <0.00%> (-2.33%)	⬇️
superset/views/database/mixins.py	80.70% <0.00%> (-1.76%)	⬇️
superset/models/core.py	88.42% <0.00%> (-0.83%)	⬇️
superset/views/base_api.py	97.53% <0.00%> (-0.50%)	⬇️
superset/connectors/sqla/models.py	90.48% <0.00%> (-0.15%)	⬇️
... and 4 more

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