Correctly set pool size when using AddPooledDbContextFactory #23983
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Fixes #23889
Description
AddPooledDbContextFactory (new in 5.0) has a parameter to set the pool size. This value was not being passed down to lower-level config and hence the default pool size is always used.
Customer Impact
The pool size cannot be changed when using the 'AddDbContext' for a factory and pooling.
How found
Customer reported on 5.0.
Test coverage
The test factoring did not test the defaults or overridden values for pool size; this has been added.
Regression?
No; new feature in 5.0.
Risk
Very low.