pgAdmin 4 commit: Fixed cognitive complexity issues reported by SonarQu

Fixed cognitive complexity issues reported by SonarQube.

Branch
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master

Details
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https://git.postgresql.org/gitweb?p=pgadmin4.git;a=commitdiff;h=9d006d0ec5deb8970e56554b39c8241b6d3aede1
Author: Nikhil Mohite <nikhil.mohite@enterprisedb.com>

Modified Files
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.../servers/databases/schemas/types/__init__.py    | 136 ++++++++++++---------
web/pgadmin/preferences/__init__.py                |  80 +++++++-----
web/pgadmin/tools/import_export/__init__.py        |  76 ++++++++----
web/pgadmin/tools/schema_diff/directory_compare.py |  53 ++++++--
4 files changed, 225 insertions(+), 120 deletions(-)