StopSearch: Show cached result on page navigation

Technically also shows any cached result immediately, such as making a
search with filter set 1, followed by another search with set 2, then
doing the search with filter set 1 again should display the results
immediately and  updates the results on the background.

Author: Huulivoide

ui/src/components/stop-registry/search/by-line/StopsByLineSearchResults.tsx

@@ -29,7 +29,7 @@ export const StopsByLineSearchResults: FC<StopSearchResultsProps> = ({
     <LoadingWrapper
       className="flex justify-center"
       loadingText={t('search.searching')}
-      loading={loading}
+      loading={lines.length === 0 ? loading : false}
       testId={testIds.loadingSearchResults}
     >
       {groupByLine ? (

ui/src/components/stop-registry/search/by-stop/StopSearchByStopResults.tsx

@@ -31,7 +31,7 @@ export const StopSearchByStopResults: FC<StopSearchResultsProps> = ({
     <LoadingWrapper
       className="flex justify-center"
       loadingText={t('search.searching')}
-      loading={loading}
+      loading={resultCount === 0 ? loading : false}
       testId={testIds.loadingSearchResults}
     >
       <CountAndSortingRow

ui/src/components/stop-registry/search/for-stop-areas/StopAreaSearchResults.tsx

@@ -32,7 +32,7 @@ export const StopAreaSearchResults: FC<StopSearchResultsProps> = ({
     <LoadingWrapper
       className="flex justify-center"
       loadingText={t('search.searching')}
-      loading={loading}
+      loading={stopPlaces.length === 0 ? loading : false}
       testId={testIds.loadingSearchResults}
     >
       {groupByArea ? (

ui/src/components/stop-registry/search/for-terminals/TerminalSearchResults.tsx

@@ -32,7 +32,7 @@ export const TerminalSearchResults: FC<StopSearchResultsProps> = ({
     <LoadingWrapper
       className="flex justify-center"
       loadingText={t('search.searching')}
-      loading={loading}
+      loading={stopPlaces.length === 0 ? loading : false}
       testId={testIds.loadingSearchResults}
     >
       {groupByTerminal ? (