proxy contract fixes

ui/address/AddressDetails.tsx

@@ -136,12 +136,14 @@ const AddressDetails = ({ addressQuery, scrollRef }: Props) => {
             hint="Implementation address of the proxy contract."
             columnGap={ 1 }
           >
-            <LinkInternal href={ link('address_index', { id: data.implementation_address }) }>
-              { data.implementation_name }
+            <LinkInternal href={ link('address_index', { id: data.implementation_address }) } overflow="hidden">
+              { data.implementation_name || <HashStringShortenDynamic hash={ data.implementation_address }/> }
             </LinkInternal>
+            { data.implementation_name && (
               <Text variant="secondary" overflow="hidden">
                 <HashStringShortenDynamic hash={ `(${ data.implementation_address })` }/>
               </Text>
+            ) }
           </DetailsInfoItem>
         ) }
         <AddressBalance data={ data }/>

ui/address/contract/ContractMethodsAccordion.tsx

@@ -82,10 +82,12 @@ const ContractMethodsAccordion = <T extends SmartContractMethod>({ data, renderC
           </AccordionItem>
         );
       }) }
+      { data.length > 0 && (
         <Flex columnGap={ 3 } position="absolute" top={ 0 } right={ 0 } py={ 3 } lineHeight="27px">
           <Link onClick={ handleExpandAll }>{ expandedSections.length === data.length ? 'Collapse' : 'Expand' } all</Link>
           <Link onClick={ handleReset }>Reset</Link>
         </Flex>
+      ) }
     </Accordion>
   );
 };