Multiline placeholder in writer field renders as single line

[plagasul]

Describe the bug

Multiline placeholder string in the writer field declaration, renders as single line placeholder string.

To Reproduce

1. Include a writer field in you yaml file as such (other fields for comparison only)

writer:
  type: writer
  placeholder: |
    blah
    blah
    blah
text:
  type: text
  placeholder: |
    blah 
    blah
    bleh          
textarea:
  type: textarea
  placeholder: |
    blah 
    blah
    bleh

2. Open panel page, and see that writer's placeholder is single line, like text field (which is single-line by default), unline textarea field.

Expected behavior
A multiline yaml string placeholder should show as multiline when rendering the field in the panel.

Screenshots

Kirby Version
Version 3.5.6

Additional context
As explained in this forum post.

[bastianallgeier]

✅