refactor: Enforce expanded sensitive inputs rules (no-changelog) (#6815)

* refactor: Enforce expanded sensitive inputs rules (no-changelog)

* refactor: Add extra exemption

* fix: Add setting to `sessionToken` fields

* fix: Restore for `hidden` fields

* fix: More edge case exemptions

* fix: One more

packages/nodes-base/credentials/Sftp.credentials.ts

@@ -42,6 +42,7 @@ export class Sftp implements ICredentialType {
 			displayName: 'Private Key',
 			name: 'privateKey',
 			type: 'string',
+			typeOptions: { password: true },
 			default: '',
 			description:
 				'String that contains a private key for either key-based or hostbased user authentication (OpenSSH format)',