Domains: Fix an availability precheck regression (#35789)

It seems that we've introduced a regression in the availabilty precheck code when we introduced TMCH. This should fix the issue - if a domain is not available we should not add it to the cart.

see: p99Zz8-Jf-p2

client/components/domains/register-domain-step/index.jsx

@@ -1114,9 +1114,7 @@ class RegisterDomainStep extends React.Component {
 						this.showAvailabilityErrorMessage( domain, status, {
 							availabilityPreCheck: true,
 						} );
-					}
-
-					if ( trademarkClaimsNoticeInfo ) {
+					} else if ( trademarkClaimsNoticeInfo ) {
 						this.setState( {
 							trademarkClaimsNoticeInfo: trademarkClaimsNoticeInfo,
 							selectedSuggestion: suggestion,