KRACOEUS-8345 added getParentBudget to allow searching

Until PD's can create valid IPs that can fund an award, this isn't fully testable. However, this prevents a stack trace from popping up if you click the search icon next to an award budget period line.
Hmm...I think its safe to assume this will never be null. If it were we have a data consistency error we should be fixing instead of avoiding. In what you've seen in testing this does that seem correct?