Fix: Trim leading zeros and keep decimal digits in formatted fields

[CarolineDenis]

Fixes #7451

Checklist

• Self-review the PR after opening it to make sure the changes look good and
  self-explanatory (or properly documented)
• Add relevant issue to release milestone

Testing instructions

• Create a new field formatter for cat num and check 'trim leading zero'
• Create a new field formatter for locality, add longitude and latitude to the fields, check trim zeros for each.
• Open the QB with CO as base table
• Add CO formatted and locality formatted
• Verify that the leading 0s are removed for CO and that the decimals after the longitude and latitude are kept.