Text Editor's block_caret options when enabled has wrong offset

[nonunknown]

Godot version

v4.0.dev.custom_build [cb4e421]

System information

manjaro Gnome 21, AMD R7 200 series, Intel i3 3.0 GHZ,8GB RAM

Issue description

When the user enables block_caret option, it has wrong offset:

over non-empty lines is fine:

over empty lines it has wrong offset:

Steps to reproduce

• Click Editor
• Editor Settings
• Text Editor
• Cursor
• block_caret
• Enable it!

Minimal reproduction project

N/a

[VedatGunel]

Seems to be a regression from #41100. Insert mode has the same problem.

From what I understand, shaped_text_get_descent and shaped_text_get_ascent returns 0 for empty text, which causes the wrong positioning.

godot/scene/gui/text_edit.cpp

Lines 1419 to 1426 in 60add98

	} else { // End of the line.
	if (insert_mode) {
	l_caret.position.y = TS->shaped_text_get_descent(rid);
	l_caret.size.y = caret_width;
	} else {
	l_caret.position.y = -TS->shaped_text_get_ascent(rid);
	l_caret.size.y = h;
	}

cc @bruvzg