feat(NcRichContenteditable): put caret in the end when focus input

[Antreesy]

☑️ Resolves

• Put caret to the end of inputted text when focus it, instead of start

🖼️ Screenshots

Casted some tests (with mouse clicks, range selections, keyboard tabbing)

Screencast.from.06.12.2023.14.44.57.webm

🚧 Tasks

• Manual tests:
  • Chrome
  • Firefox
  • Safari
• TODO
  • Check if code could be reused:

nextcloud-vue/src/components/NcRichContenteditable/NcRichContenteditable.vue

Lines 700 to 705 in 9dcd33b

	// Put cursor at the end of the selection
	const newRange = document.createRange()
	newRange.setStart(event.target, range.endOffset)
	newRange.collapse(true)
	selection.removeAllRanges()
	selection.addRange(newRange)

🏁 Checklist

• ⛑️ Tests are included or are not applicable
• 📘 Component documentation has been extended, updated or is not applicable