[9.x] Use write connection on Schema::getColumnListing() and Schema::hasTable() for MySQL and PostgreSQL

[taka-oyama]

This is a follow up PR to #25203.

That PR made it so that the Illuminate\Database\Schema\Builder would do a select on the write connection.

The change was made to prevented migrations from getting PDOException when the read connection had not received the preceding migration changes due to replication lag.

The problem with that PR was that it applied the fix towards the generic schema builder which is overridden for MySQL and PostgreSQL specific builders.

So the fix was not applied for MySQL and PostgreSQL. This PR is an attempt to fix that.

This change will not break any existing features.

[taka-oyama]

I just realized there were no tests for this case. I will add some. -> done.

[taka-oyama]

AWS's S3 library seems to be failing but that is unrelated to this fix.

I submitted a PR issue to aws-sdk-php to fix the failing test.

[driesvints]

@taka-oyama I didn't see a PR from you, only an issue? Anyway I sent one on here: aws/aws-sdk-php#2560

[taka-oyama]

Sorry, you're right, I meant I sent an issue. Thank you.