fix: handle context-dependent feature flags in CLI

[betodealmeida]

SUMMARY

@ktmud pointed out in #11803 that GET_FEATURE_FLAG_FUNC might use the app context, breaking the CLI. This PR fixes it.

BEFORE/AFTER SCREENSHOTS OR ANIMATED GIF

N/A

TEST PLAN

Added this to my superset_config.py:

# pylint: disable=invalid-name
def GET_FEATURE_FLAGS_FUNC(feature_flags_dict: Dict[str, bool]) -> Dict[str, bool]:
    from flask import g

    if hasattr(g, "user") and g.user.is_active:
        feature_flags_dict["some_feature"] = g.user and g.user.id == 5
    return feature_flags_dict

The CLI works as expected.

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

[codecov-io]

Codecov Report

Merging #12088 (539ad3b) into master (08b3ebe) will decrease coverage by 3.57%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##           master   #12088      +/-   ##
==========================================
- Coverage   67.26%   63.69%   -3.58%     
==========================================
  Files         959      959              
  Lines       47241    47232       -9     
  Branches     4629     4629              
==========================================
- Hits        31778    30083    -1695     
- Misses      15345    16965    +1620     
- Partials      118      184      +66     

Flag	Coverage Δ
cypress	?
javascript	62.68% <ø> (ø)
python	64.30% <0.00%> (-0.01%)	⬇️

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

Impacted Files	Coverage Δ
superset/cli.py	34.50% <0.00%> (-0.29%)	⬇️
superset-frontend/src/explore/App.jsx	0.00% <0.00%> (-100.00%)	⬇️
superset-frontend/src/dashboard/App.jsx	0.00% <0.00%> (-100.00%)	⬇️
superset-frontend/src/setup/setupColors.js	0.00% <0.00%> (-100.00%)	⬇️
superset-frontend/src/chart/ChartContainer.jsx	0.00% <0.00%> (-100.00%)	⬇️
superset-frontend/src/explore/reducers/index.js	0.00% <0.00%> (-100.00%)	⬇️
...et-frontend/src/dashboard/containers/Dashboard.jsx	0.00% <0.00%> (-100.00%)	⬇️
...t-frontend/src/dashboard/containers/SliceAdder.jsx	0.00% <0.00%> (-100.00%)	⬇️
...-frontend/src/visualizations/presets/MainPreset.js	0.00% <0.00%> (-100.00%)	⬇️
...tend/src/dashboard/containers/DashboardBuilder.jsx	0.00% <0.00%> (-100.00%)	⬇️
... and 158 more

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[ktmud]

Thanks for the fix!