Obfuscation for API key input text fields

### Is there an existing issue for this?

- [x] I have searched the existing issues and checked the recent builds/commits

### What problem are you experiencing?

Add an option to enable a security feature for API input fields to the text is covered with ****** like a password.

### When does this problem occur?

nodes with API input

### How often do you encounter this problem?

Multiple times per day

### How much does this problem affect your workflow?

Minor annoyance

### Current workarounds

_No response_

### Ideas for solutions (Optional)

_No response_

### Additional context

_No response_

┆Issue is synchronized with this [Notion page](https://www.notion.so/Issue-7740-Obfuscation-for-API-key-input-text-fields-2d26d73d365081748309e0ce1d96ee02) by [Unito](https://www.unito.io)

The issue identifies API input fields in nodes but names no files, tests, or entry points. Start by locating the frontend components that render node API inputs and check how password-like fields are currently handled. Done means an optional obfuscation setting is available for the relevant fields and its behavior is covered by the project's existing checks.

Written by the indexing model from the issue text.