Add LeftPad Action to Workflow Builder

Please add a native LeftPad action to the Workflow Builder for string formatting.

Example:

• Input: 123, Length: 6, Pad Character: 0

• Output: 000123

The action should only pad values shorter than the target length and leave longer values unchanged.

This is a common requirement for formatting IDs, reference numbers, and document numbers. Today, users must implement complex workarounds such as loops, regular expressions, or even custom API endpoints whose sole purpose is to perform simple left-padding operations. A built-in action would significantly simplify workflow design and improve maintainability.