[Sorbitol]

GetStorageParameters formatted non-bool, non-string values with ToString(), so a double such as HasStorageParameter("autovacuum_vacuum_scale_factor", 0.01) became 0,01 under comma-decimal cultures and broke CREATE TABLE … WITH (…), CREATE INDEX … WITH (…) and ALTER TABLE … SET (…). It now uses Convert.ToString(value, CultureInfo.InvariantCulture), as the sequence DDL in the same file already does.

Test: Create_table_with_storage_parameter_is_culture_invariant in MigrationsNpgsqlTest creates a table with that parameter under a culture whose decimal separator is ,, and asserts the generated SQL and the scaffolded value. Without the fix it fails with 42601: syntax error at or near "01". The ALTER TABLE path goes through the same helper.

Ran locally with the pinned SDK (11.0.100-rc.3.26522.148) against postgis/postgis:18-3.6:

• the new test: fails before the fix, passes after;
• MigrationsNpgsqlTest and MigrationsInfrastructureNpgsqlTest: 280 passed, 2 skipped;
• EFCore.PG.Tests: 770 passed;
• dotnet format --verify-no-changes on the changed files: clean.

Fixes #4114

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