fix(dashboard): import handle missing excluded charts

[villebro]

SUMMARY

This PR extends the awesome work in #18562 by removing excluded charts from native filter configurations during importing. This can happen if a chart that was present when a native filter scope was defined is later removed from the dashboard.

TESTING INSTRUCTIONS

1. Import the exported dashboard from this PR: perf(dashboard): Improve performance of complex dashboards #19064
2. See the KeyError that's raised (with this change the import is successful)

ADDITIONAL INFORMATION

• Has associated issue:
• Required feature flags:
• 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

[kgabryje]

LGTM

[codecov]

Codecov Report

Merging #19088 (393d6a2) into master (220c461) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master   #19088   +/-   ##
=======================================
  Coverage   66.51%   66.51%           
=======================================
  Files        1643     1643           
  Lines       63473    63473           
  Branches     6454     6454           
=======================================
  Hits        42218    42218           
  Misses      19585    19585           
  Partials     1670     1670           

Flag	Coverage Δ
hive	52.59% <ø> (ø)
mysql	81.82% <ø> (ø)
postgres	81.87% <ø> (ø)
presto	52.44% <ø> (ø)
python	82.30% <ø> (ø)
sqlite	81.62% <ø> (ø)

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

Impacted Files	Coverage Δ
superset/dashboards/commands/importers/v1/utils.py	84.93% <ø> (ø)

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