fix: DBTooltip race condition when component unmounts during delayed positioning (#4984)

* Initial plan

* fix: db-tooltip race condition with null check in delayed callback

* Update tooltip.lite.tsx

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: copilot-swe-agent[bot] <copilot@github.com>
Co-authored-by: Maximilian Franzke <787658+mfranzke@users.noreply.github.com>

Author: 3 people

packages/components/src/components/tooltip/tooltip.lite.tsx

@@ -56,11 +56,14 @@ export default function DBTooltip(props: DBTooltipProps) {
 			if (_ref) {
 				// This is a workaround for angular
 				utilsDelay(() => {
-					handleFixedPopover(
-						_ref,
-						parent,
-						(props.placement as unknown as string) ?? 'bottom'
-					);
+					// Due to race conditions we need to check for _ref again
+					if (_ref) {
+						handleFixedPopover(
+							_ref,
+							parent,
+							(props.placement as unknown as string) ?? 'bottom'
+						);
+					}
 				}, 1);
 			}
 		},