fix: search flash of no tokens found when typing (#4531)

* add null check to collection floor price

* don't show 0 if floor is null

* use debouncedSearchValue
Co-authored-by: Charlie <charlie@uniswap.org>

src/components/NavBar/SearchBar.tsx

@@ -367,14 +367,14 @@ export const SearchBar = () => {
           </NavIcon>
         </Box>
         {isOpen &&
-          (searchValue.length > 0 && (tokensAreLoading || collectionsAreLoading) ? (
+          (debouncedSearchValue.length > 0 && (tokensAreLoading || collectionsAreLoading) ? (
             <SkeletonRow />
           ) : (
             <SearchBarDropdown
               toggleOpen={toggleOpen}
               tokens={reducedTokens}
               collections={reducedCollections}
-              hasInput={searchValue.length > 0}
+              hasInput={debouncedSearchValue.length > 0}
             />
           ))}
       </Box>