fix(trino): handle missing db in migration

[villebro]

SUMMARY

When running superset db upgrade on my local devenv, the 87ffc36f9842 migration errored out on the following Trino connection string: trino://trino@localhost:8081.

AFTER

executes successfully

BEFORE

  File "/Users/ville/apple/apache-superset/superset/migrations/versions/2024-05-09_18-44_87ffc36f9842_enable_catalog_in_bigquery_presto_trino_.py", line 36, in upgrade
    upgrade_catalog_perms(engines={"trino", "presto", "bigquery", "snowflake"})
  File "/Users/ville/apple/apache-superset/superset/migrations/shared/catalogs.py", line 384, in upgrade_catalog_perms
    if default_catalog := database.get_default_catalog():
  File "/Users/ville/apple/apache-superset/superset/models/core.py", line 580, in get_default_catalog
    return self.db_engine_spec.get_default_catalog(self)
  File "/Users/ville/apple/apache-superset/superset/db_engine_specs/presto.py", line 306, in get_default_catalog
    return database.url_object.database.split("/")[0]
AttributeError: 'NoneType' object has no attribute 'split'

TESTING INSTRUCTIONS

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

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 83.68%. Comparing base (76d897e) to head (1174e6a).
Report is 1094 commits behind head on master.

Additional details and impacted files

@@             Coverage Diff             @@
##           master   #29997       +/-   ##
===========================================
+ Coverage   60.48%   83.68%   +23.19%     
===========================================
  Files        1931      528     -1403     
  Lines       76236    38134    -38102     
  Branches     8568        0     -8568     
===========================================
- Hits        46114    31911    -14203     
+ Misses      28017     6223    -21794     
+ Partials     2105        0     -2105     

Flag	Coverage Δ
hive	48.97% <66.66%> (-0.20%)	⬇️
javascript	?
mysql	76.75% <33.33%> (?)
postgres	76.82% <33.33%> (?)
presto	53.52% <66.66%> (-0.28%)	⬇️
python	83.68% <100.00%> (+20.19%)	⬆️
sqlite	76.29% <33.33%> (?)
unit	60.33% <100.00%> (+2.71%)	⬆️

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