refactor(backends/mock/factory): replace long if statements with dict

[DavidRomanovizc]

What was wrong?

The code had multiple long if-else statements, making it repetitive and hard to read.

How was it fixed?

Replaced the if-else statements with a dictionary of default values. This simplifies the logic and improves readability.

Todo:

• Clean up commit history
• Add or update documentation related to these changes
• Add entry to the release notes

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