Fix playback position label update in Audio Stream Importer

The current playback position label doesn't get updated if the playhead is not visible. The label is updated in `_draw_indicator()` at the end of the function, but we return early if the calculated offset falls outside the valid range. This fix moves the label updating above this check, ensuring that the label always gets updated regardless of the visibility of the playhead.

Fixes godotengine#86550.

(cherry picked from commit 155bebf)

editor/import/audio_stream_import_settings.cpp

@@ -277,6 +277,8 @@ void AudioStreamImportSettings::_draw_indicator() {
 		rect.size.height -= y_ofs;
 	}
 
+	_current_label->set_text(String::num(_current, 2).pad_decimals(2) + " /");
+
 	float ofs_x = (_current - zoom_bar->get_value()) * rect.size.width / zoom_bar->get_page();
 	if (ofs_x < 0 || ofs_x >= rect.size.width) {
 		return;
@@ -310,8 +312,6 @@ void AudioStreamImportSettings::_draw_indicator() {
 			}
 		}
 	}
-
-	_current_label->set_text(String::num(_current, 2).pad_decimals(2) + " /");
 }
 
 void AudioStreamImportSettings::_on_indicator_mouse_exited() {