Fix editing a derived column without changing the name

[axelstudios]

Any background context you want to provide?

Attempting to edit an already-saved column, without changing the name, always resulted in an error because the name was already taken by itself.

What's this PR do?

• Fixes updating an existing derived column when the name is unchanged
• Fixes Derived Columns active nav for all subpages
• Improves the Create Derived Column button to set the default type on the editor page based on whether it was clicked when viewing the Property or Tax Lot derived columns
• Improves the Create/Save button such that it takes you to the correct Property/Tax Lot derived column page on success

How should this be manually tested?

• Create a derived column, click Edit, then click Save. It should now succeed
• Check that the Derived Columns nav shows as active while on any of the derived column pages
• Check that the Create Derived Column button initializes the Type field depending on which tab you were using when you clicked it
• Check that saving a derived column takes you to the correct tab where it appears

[nllong]

Before:

After your changes, the derived column can be saved with the same name!

Nav stays active ✅
saving takes to correct tab ✅
Property/TaxLot Type is initialized correctly ✅