fixed bug in toSearchParams where null values would be included as ke…

…y=null which would be considered the string null on the other end. We're now filtering out null values before converting to URLSearchParams.

This was causing Create project from draft to fail for projects created without an org.

frontend/src/lib/util/query-params.ts

@@ -67,7 +67,9 @@ function getDefaults<T extends Record<string, unknown>>(
  * https://github.com/microsoft/TypeScript-DOM-lib-generator/issues/1568#issuecomment-1587963141
  */
 export function toSearchParams<T extends PrimitiveRecord>(params: T): string {
-  const searchParams = new URLSearchParams(params as unknown as Record<string, string>);
+  //filter out null values
+  const paramsWithoutNull = Object.fromEntries(Object.entries(params).filter(([_, v]) => v !== null));
+  const searchParams = new URLSearchParams(paramsWithoutNull as unknown as Record<string, string>);
   return searchParams.toString();
 }