Invoke-DbaDbDataMasking - fix up decimal & bit support

[AdamJKoehler]

Bug #9180

Type of Change

• Bug fix (non-breaking change, fixes Invoke-DbaDbDataMasking.ps1 failing on bit columns #9180 )
• New feature (non-breaking change, adds functionality, fixes # )
• Breaking change (affects multiple commands or functionality, fixes # )
• Ran manual Pester test and has passed (Invoke-ManualPester)
• Adding code coverage to existing functionality
• Pester test is included
• If new file reference added for test, has is been added to github.com/dataplat/appveyor-lab ?
• Unit test is included
• Documentation
• Build system

Purpose
Fix up Invoke-DbaDbDatamasking to improve bit & decimal value support

Approach
There was a missing check if a data type was a decimal and the value came back blank instead of with an actual value. I changed this to make sure that if blank is returned, it is set to 0.00 instead. I also encountered errors with bit values as in the open item, and was able to track down the error to Convert-DbaMaskingValue using Claude Code & my error message. It made the recommendations to improve the RegEx search string and to add the additional checks for boolean values to convert to 1 & 0 for a bit column in the database. I also updated the tests to test for decimal and bit values & masking them as well.

[andreasjordan]

I don't have the time to test this, but I left some comments. Will try to test this in the next days.

[andreasjordan]

Thanks for the fix, just tested this in my lab. Looks good to me.

[andreasjordan]

I would suggest to merge this now and then after that have a look at #9671